When i think about food, why do i smell it? I don't know why my body does this but when I think or read about food, it's like I can smell it and almost taste it. Why?

Answers

Answer 1

Answer:

I believe this has to deal with the connections your brain makes that associates the olfactory stimulation with the particular food. I'm no expert but I hope this helps

Explanation:

Answer 2

Answer:

Don't worry, I do this too.

Explanation:

So this is nothing irregular, your brain and cranial nerves just work way more when you think about certain things, and they bring memories of the way things smell to your mind. They're pretty much saying, "Oh hey I remember this, I'll show this to you so you can see it too."


Related Questions

Explaining Physical Responses to Bullying
Which chemical helps supply the muscles with energy
when the body faces a crisis, such as confronting a
bully?
Deep inside the emotional center of the brain, an
almond-shaped structure called the amygdala is working
hard. If someone is faced with a bully, the amygdala
sends out alarms. It tells the body, "Time to go into crisis
mode!” The chemicals epinephrine and norepinephrine
are released into the bloodstream. Everything speeds up,
including heartbeat, blood flow, and breathing. Next, the
hormone cortisol is sent on an emergency mission to fill
the muscles with nutrients and energy in case anyone
needs to run.
- “Bullying and Stress"
O cortisol
O amygdala
O epinephrine
O norepinephrine

Answers

Answer:

Its Cortisol

Explanation:

Just got the question

Answer:

Cortisal

Explanation:

Describe the impact of cancer on people in the United States and compare it to other major health problems in terms of rbidity / (mortality) , costs, and overall effectiveness of prevention and control.

Answers

Cancer is a disease that has a major impact on American society, as well as on all populations around the planet.

Cancer was once a disease that imposed a high mortality rate in the USA, however, currently this rate has been decreasing year after year, due to all the scientific and technological advances that have allowed better treatments and a better quality of life to be established. for people who have this disease. This implies that, although cancer is not a simple disease, its mortality has been lower than that of many diseases.

This reduction in mortality is not only the result of advances in science and technology, but also a better dissemination of prevention methods. Society is very easy to know how to prevent many types of cancer and this has reduced the incidence of this disease.

However, it is necessary to show that the treatment, monitoring and medical control of cancer patients is expensive and many people are unable to pay, which means that it is necessary to create public policies that reduce social inequality and allow cancer manageable for the entire population.

What type of tumors is called cancer?
Benign
Malignant
Neoplasm
All of the above

Answers

Malignant

Explanation:

Malignant tumors are cancerous growths. They are often resistant to treatment, may spread to other parts of the body and they sometimes recur after they were removed.

Answer:

Malignant

Explanation:

Benign is not necessarily cancer because it doesn't spread the way a malignant tumor can. Malignant is a tumor made up of cancer cells, and a neoplasm is an abnormal growth of tissue as a characteristic of cancer.

Describe a time you or someone you know faced a stereotype or prejudice.

Answers

Answer:

hope it helps.

Explanation:

Some examples of families facing stereotypes are:

- Polygamous families: These are families where a man marries different women for religious reasons, these families face discrimination because of their religious practices.

-Families of same-sex parents: These families also face prejudices about the type of parenting they give their children.

- Single-parent families: Because it is considered that they should be constituted by both paternal figures for the child to develop optimally, this type of families also faces prejudices.

I hope this information can help you.

Which of the following choices is the most important to do before starting an exercise program?

Answers

Which choices are there ?

Answer:

A. see your doctor

Explanation:

- Help establish guidelines for physical activity

- Help choose safe physical activities

- Accesses the risk of a physical activity program      

Your friend does not think that it is necessary to follow the seven important elements of a weight-training program. Prepare an argument that will convince your friend of the seven elements' importance

Answers

Answer: The seven elements: overload, progression, specificity, regularity, recovery, balance, and variety are all very important to the  program.  to see progression as well as follow a safe way of becoming healthier and fit, these principles are key.

np

Brainliest Would be nice

Answer:

The seven elements: overload, progression, specificity, regularity, recovery, balance, and variety are all very important to your program. If you want to see progression as well as follow a safe way of becoming healthier and fit, these principles are key.

Explanation:

Can your answers be wrong

Answers

Answer:

yesss

Explanation:

ahhah

Answer:

yes

Explanation:

2. During a patient's Physical Therapy session, you reach down to grab the
medicine ball. Which of the following would be the proper way to lift it off the
ground?

a.Keep your feet very far apart with your knees locked and bend at the waist to
reach and lift

b.Keep your feet shoulder-width apart, bend at the knees and squat until you are
level with the object, then use your leg muscles to raise yourself up.

c. Keep your legs straight with your feet together and bend over to pick it up

d. All of the above ways are acceptable

Answers

B would be the correct answer
B is your correct answer ,

Express this number in standard form.
2.077 x 10-41 ?
4​

Answers

Answer:

2.077 e+41 x 10

Explanation:

The number is just too long.

2.077 x 10^10 = 20770000000 x 10^10

we do not add this 4 times we multiply it another 31 times. so the answer is correct.

Answer:

0.0002077

Explanation:


Based on the passage, which actions can be
considered bullying? Check all that apply.
The Centers for Disease Control and Prevention defines
bullying as "unwanted, aggressive behavior among
school-aged children that involves a real or perceived
power imbalance. The behavior is repeated, or has the
potential to be repeated, over time."
- "Bullying and Stress"
O taunting someone
O tripping someone
O spitting on someone
O disagreeing with someone
O threatening to hurt someone
O breaking someone's belongings

Answers

Answer:

Taunting someone, tripping someone,spitting on someone, threatening to hurt someone and breaking someone's belongings are all considered bullying

Explanation:

Hope this helps:)

Bullying is any action that threatens and intimidates another person among young people and whichmay be repeated over time.

What is bullying?

According to the Centers for Disease Control and Prevention, bullying can be defined as "unwanted, aggressive behavior among school-aged children that involves a real or perceived power imbalance.

Based on the above definition, the acts of bullying among the listed include:

taunting someonetripping someonespitting on someonethreatening to hurt someonebreaking someone's belongings

Therefore, any action that threatens and intimidates another person among young people is an act of bullying.

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How is eating healthy help your bones, muscles, respiratory system and nutrition

Answers

Answer:

Nutrition and exercise play a major role in keeping your bones and muscles healthy. Because the bones and skeletal muscles work together, the nutrients you consume and activities you participate in often affect both systems simultaneously. For most people, consuming a healthy diet with a wide variety of vitamins and minerals is enough to ensure bone and muscle health, although athletes, pregnant women and people with certain medical conditions may need to adjust their nutrient intake or exercise plan.

Explanation:

21 Write the most appropriate forms of adjectives and adverbs from one set in each
sentence.
bad / skilled / well
early / new / well-behaved
beautiful / different /quick fast / old / tall
easy / short / well-known
good / likely / long
you wait, the
.you are to miss the
1 The
bargains in the sale.
2 Our
son is
than his dad, but our other two haven't grow
as
group of students is
than that other group who staye
book is
.... and.
to read than all the
3 The
here
4 His
others.
5 There are several
of the island, but the
6 I can't play as
or the .....
beach on the other side
ways to get to the
... way is by boat.
... as most of the others, but I'm not the
of all those who want to participate.
player
22 Complete this first paragraph of an essay about 'fast food' with these adjectives and
adverbs.
better
faster
puzzled
smaller
as quickly as
less beneficial
more easily
more wasteful
the best
the most important
When did we decide that ‘more convenient'is (1)
way to choose between two​

Answers

Answer:sushi just love f

Explanation: is ju

st sushi

Choose the federal programs being described from the drop-down menus. Provides federal assistance for healthcare and nutrition for women, infants, and children: Provides low-income individuals and families with food stamps: Provides students with low-cost or free meals:

Answers

Provides federal assistance for healthcare and nutrition for women, infants, and children: WIC ( Women, Infants, and Children )

Provides low-income individuals and families with food stamps: SNAP ( Supplemental Nutrition Assistance Program )

Provides students with low-cost or free meals: NSLP ( National School Lunch Program )

How much does the WIC cost in the US?

$ 4.9 billion

As the third-largest food and nutrition assistance program, the WIC has provided an estimated 6.2 million participants per month by the 2020 financial year, which includes almost half of all children born in the United States. The cost of the WIC government program has reached $ 4.9 billion by the 2020 financial year.

What is the income limit for 2021 food stamps?

$ 1,500 + $ 550 social security = $ 2,050 total revenue. If the total monthly income is below the family size limit, determine the total income. $ 2,050 is less than the $ 2,871 allowed in a family of four, so cut the income.

What are the requirements for NSLP school lunch programs in the United States?

Low-income children qualify for reduced or free school meals. Children in households with a minimum wage of 130% or those receiving SNAP or TANF are eligible for free meals. Those with a family income of between 130 and 185 percent of the poverty line are eligible for reduced food intake.

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Answer:
Put these into Selection bar in order

1). WIC
2). SNAP

3).NSLP

Explanation: These are the right order to be put in!

If you like my explanation I would appreciate getting the brainliest from you.

what is the first thing to do for someone who is choking and is unable to respond

Answers

Answer:They need  the Heimlich maneuver performed

Explanation:

Which means Get the person to stand up.

Position yourself behind the person.

Lean the person forward and give five blows to their back with the heel of your hand.

Place your arms around their waist.

Make a fist and place it just above the navel, thumb side in.

Grab the fist with your other hand and push it inward and upward at the same time. Perform five of these abdominal thrusts.

Repeat until the object is expelled and the person can breathe or cough on their own.

You must use the heimlick manuvor (I cant spell)

G
What strategy is being used when a person makes the conscious decision not to drink?
Barrier Strategy
Refusal Strategy
Approval Strategy
Analyzing Strategy

Answers

Answer: Refusal Strategy

Explanation: i know you need this for edgunity or a quiz

If a person does not use abusive substances, they will have fewer legal and social issues. A person uses the refusal strategy to consciously make the decision not to drink. Thus, option B is correct.

What is Refusal Strategy?

A refusal strategy is a type of strategy where the person denies and rejects any proposal by making excuses, explanations, reasonings, and regretful statements.

If a person consciously rejects to drink, then they may directly or indirectly say no, so as to avoid any harmful and dangerous risks. It can be helpful in avoiding substance abuse.

Therefore, the person uses the refusal strategy to deny the intake of alcohol.

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What color did I dye my hair
A)BLUE
B)PINK
C)RED
D)GREEN
E)BLONDE
F)ORANGE

Answers

Answer:

Blonda

Explanation:

What is the best example of physical contamination?

Answers

Answer: look at below

Explanation:

The more common examples of physical contaminants include glass, metal, rubber, bone, wood, stone and plastic. Here's a closer look at how some of those contaminants find their way into food products

Physical contamination of things include the entry of physical objects into food substance such as hair, jewelry, broken glass, and metal.

What is Physical contamination?

Physical contamination of something occurs when a physical object enters into the food substance at some stage of the production or the preparation process of the food substance. Physical objects in the food can be a choking hazard and these are often found to introduce biological contaminants as well in the food substance. These make the food not fit for eating.

Common examples of physical contaminants include hair, bandages, fingernails, jewelry, broken glass, metal, or the pest droppings.

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1. What were the three most significant impacts of the Coronavirus on the humankind in the
beginning of 2020?

Answers

1) death of people in large quantity

2) administration

3) many people loss their job

All 3
If that’s not an option 1 and 3

What wouldn’t you say if you are serious about avoiding drugs?

Answers

Answer:

you wouldnt say yes to someone offering you drugs

Explanation:

Answer: you would stand up and say no

Explanation:

what is a sensory receptor?

Answers

Answer:

A sensory receptor is a structure that reacts to a physical stimulus in the environment, whether internal or external. It is a sensory nerve ending that receives information and conducts a process of generating nerve impulses to be transmitted to the brain for interpretation and perception.

I hope this helps :)


Which two rivers played a major role in the development of Ancient Rome?
A) Tiber and Po
B) Nile and Danube
C) Tigris and Euphrates
D) Mediterranean and Adriatic

Answers

Answer:

the tiber and po

Explanation:

these were the longest rivers in rome

Which nutrient serves as a major source of energy?

Answers

it would be a carbohydrate
Sugar hope it helps!!

2. Which of these is a sign of a heart attack?
a. difficulty breathing
b. profuse sweating
c. chest pain
d. a and b
e. a, b, and a

Answers

Answer:

a

Explanation:

Pressure, tightness, pain, or a squeezing or aching sensation in your chest or arms that may spread to your neck, jaw or back.

Nausea, indigestion, heartburn or abdominal pain.

Shortness of breath.

Cold sweat.

Fatigue.

Lightheadedness or sudden dizziness.

Due 11:00 PM PLEASE HELP DUE TODAY (11+points)
Week 7: Friday:

1. How can Ultimate Frisbee be used to satisfy the physical activity element of your wellness plan?
2. Select your favorite sport and explain how having good balance, flexibility, and agility helps improve your fitness levels in that sport.

Answers

Answer:

It get's you to go outside and run, and running means exercise, and exercise makes you feel well and healthySoccer. Having good balance, flexibility and agility makes it easier to play because all that stuff is needed to make other players from the other team think that I am going into another direction but not the direction I want

Does that make sense?

Hope it helps and I hope I get brainliest!

Explanation:

Anyone got any tips I want a guniea pig really bhad! My parents are really annoying and telling me I got to wait till I move out. Please give me tips or ideas on how to convince them. Thank you
By the way that’s me at my friends with her guinea pig

Answers

prove to them you can be responsible , or bribe them.  both worked for my sister, who is getting two for her birthday next week.   just remember when getting them that guinea pigs tend to need a friends so youll need too, and two girls is best

good luck!!!

Answer:

Keep asking it worked for me

Explanation:

PLEASE HELP ASAP
I WILL MARK THE BRAINLIEST

7. Youth-oriented antismoking campaigns are successful because they help young people develop _____ skills.

9. What do the toxic chemicals used in paving roads, rocket fuel, and rat poison have in common?

Answers

Answer:

im not fully sure..

Explanation:

1.social????

2. they are used in cigarettes?? cyanide

sorry :/

Answer:

good

Explanation:

The author probably wrote this article in order to __________. Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selected A Describe how Kiera learned to walk after losing parts of her limbs B persuade readers to watch one of Kiera's performances on the Internet C Share 16-year-old Kiera Brinkley's story with readers D Convince readers to donate money to the Dream Factory

Answers

Answer:

C. Share 16-year-old Kiera Brinkley's story with readers.

Explanation:

The author who wrote the article and the ensuing interview with Kiera Brinkley was simply sharing the story of the teen girl who lost lost her limbs at age two to Pneumococcus to inspire the readers and inform them of her experience so far. Kiera explained that she loves dancing and a worker at the Dream factory help her live her wishes when she was offered a trip to Julliard, one of the biggest dancing schools.

Kiera's story is that of a positive young girl who does not allow her condition get into the way of her happiness. She also has the immense support of her family which enables her get through life and believe in her dream of becoming a nurse someday.

Provide an example of how people use biomechanical principles, stances, locomotion, or a combination of these in one of the following activities: swimming, surfing, or soccer.

Answers

Answer:

Regarding swimming, locomotion in the aquatic environment is a requirement to be able to perform well in this sport, thus triggering a good posture for the farthing of a large number of muscles, mainly those of the back and finally in this sport, biomechanical principles. they are important for the coordination of simultaneous movements between the legs and arms.

As for surfing, posture is essential, because it is a sport that requires a lot of balance on the board to be able to descend the wave, that is why if someone presents bad posture, bad footfall on the board and consequently poor balance (in This sport, the biomechanical principles and locomotion are also important for coordination movements, punctually at the moment when the body goes from being in a lying position on the table to standing vertically on the table).

Finally in soccer the fundamental factor is the biomechanical for coordination with the element that in this case is the ball. The locomotion is very important since it is not only a sport where it consists of a lot of locomotion but also it is locomotion with object with a specific direction.

And finally, in this sport, posture is also important for the preservation of the joints in the moments of action and reaction that football has.

Explanation:

In biomechanics, animal locomotion is the study to know how animals move. Not all animals move, but the ability to move is widespread anywhere in the animal kingdom. Since all animals are heterotrophs, they have to obtain food from their environment. Some animals, such as sponges, are sessile and move fluid, which is through their bodies (this is known as filter feeding). Still, most animals have to move to find food, to mate, and for other needs, therefore the ability to move efficiently is essential for their survival.

Body posture is the relationship of the positions of all the joints of the body and their correlation between the position of the limbs with respect to the trunk and vice versa.

Imagine an athlete the day after sustaining a head injury sitting in class suffering the symptoms of a concussion (e.g., slurring of speech, disorientation, dizzy). There are whispers and laughter and rumors starting about the athlete drinking at school.

Answers

Answer:

They most likely have brain damage, such as experiencing a stroke or seizure

Explanation:

Based on the information given, the athlete is experiencing concussion.

Concussion is a brain injury which occurs when a person hits his or head on something. The symptoms of concussion are:

Memory lossDizzinessLoss of consciousnessLack of coordinationHeadacheNauseaVomitingExcessive fatigue.Slurring of speech.

In this case, the athlete should have being taken for a proper medical check up to ensure that he is okay and medically fit before coming to the class.

Despite that, the athlete should be made to rest since he's having the symptoms of concussion and a medical personnel should be called to come check the person.

Read related link on:

https://brainly.com/question/1445399

What organs and tissues are in the circulatory system

Answers

Answer:

The Heart, lungs, and arteries, veins, coronary and portal vessels.

Explanation:

The system is responsible for

the flow of bloodthe flow of nutrientsthe flow of oxygenand hormones

Hope this helped!

The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
Other Questions
The volume of a cone is 3x* cubic units and its height is x units.Which expression represents the radius of the cone's base, in units?O 3x6x370x2O 90X2Mark this and retumSave and ExitNextSubmit Most of the countries in Central and East Asia have __________ economies. A. mixed B. market C. command D. traditional Please select the best answer from the choices provided A B C D Which sentence contains prepositional phrases?The detective, Max Mixim, works for several clients.He helps people who are experiencing problems.You see, Mixim does not like working alone. Bernard is a canine couch potato but also a great helper. The factors of the polynomial areA.(x + 1)(2+ix)(2-ix)B.(x-1)(2+ix)(2-ix)C.(x-1)[x-(3+1)][x-(4-1)]D.(x+1)(x+(2+1)][x- (2-1)]E.(x-1)[x+(2+1)][x- (2-1)] name one example when a non-state entity transferred control of a colony to a state Strange WeatherTyrik gasped at the weather outside. He had heard of this weather spectacle before, but he had never experienced it. White flakes accumulated on the front yard, the street, and the sidewalk. It was snow.Tyrik grew up near Miami, where it never snowed. But, during a winter break from school, his parents took him up to visit his aunt and uncle in Michigan. This was his first time out of Florida. For the first few days, it was bitterly cold. Fortunately, Tyrik brought a warm coat, snow gloves, and a knit cap with him. Today, though, it snowed and he wished he had a pair of snow pants.After a scrumptious breakfast of grapefruit, kiwi, and seasoned scrambled eggs, his aunt and uncle asked if he wanted to go sledding. He jumped up and down with excitement. His mother, however, pointed out that he did not have snow pants. She didnt want him to ruin his normal pants in the snow. Tyriks aunt offered to go next door to borrow a pair from the neighbors. They had a son close to Tyriks age. While his aunt walked next door, Tyrik brushed his teeth and put on a few layers of clothes. With his teeth cleaned and his body protected by two pairs of pants, two shirts, two pairs of socks, he went downstairs. Eventually, his aunt walked in carrying a pair of snow pants and snow boots. She was followed by a boy around the same height as Tyrik.Hi, Im Connor, the boy replied. Do you want to go sledding with me? Tyrik pulled on the snow pants and laced up the snow boots. He zipped up his coat and followed the boy outside. Connor explained that there was a great hill for sledding a few blocks away. He had an extra sled that Tyrik could use. As they walked, Tyrik told his new friend about Florida.It sounds awesome, Connor replied. Id love to visit sometime. I want to see the ocean.Yeah. You could stay at my house, Tyrik suggested.The boys spent the whole morning sledding. They took a break to have lunch at Connors house. Then, in the afternoon, they built a snow fort and a snowman. Although Tyrik loved Florida, he was grateful for an opportunity to see snow and play in it. He couldnt wait to teach Connor how to build sand castles and how to boogie board when he visited Florida. The author compares building sandcastles in Miami to building snow forts and snowmen in Michigan. What Florida activity does Tyrik compare sledding to?A: FishingB: Wake boardingC: Boogie boardingD: Playing in the ocean2: What is another word that could replace scrumptious in this sentence? After a scrumptious breakfast of grapefruit, kiwi, and seasoned scrambled eggs, his aunt and uncle asked if he wanted to go sledding.A: BlandB: ExcitingC: DeliciousD: Unappetizing3: Who does they refer to in this sentence in the last paragraph? Then, in the afternoon, they built a snow fort and a snowman.A: The neighborsB: Tyrik's familyC: Tyrik and ConnorD: The fort and snowman4: What significance do Tyriks Aunt and Uncles neighbors have in the story?A: They invited Tyriks family over for dinner.B: They asked Tyrik to go sledding in the snow.C: They found snow pants that Tyrik could borrow.D: They encouraged Tyrik to come out to Michigan again next year.5: Read the following sentence from the passage: Although Tyrik loved Florida, he was grateful for an opportunity to see snow and play in it. What is another word that can replace the underlined word in this sentence?A: HappyB: ExcitedC: GraciousD: Appreciative6: Why does Connor want to see the ocean?A: He loves the ocean and marine animals.B: He is used to seeing snow every winter.C: He wanted to visit Tyrik where he lives in Miami.D: He had never been to Florida and has never seen it before.7: According to the passage, what characteristic is similar between Connor and Tyrik?A: They are the same age.B: They have the same interests.C: They are about the same height.D: They are in the same grade level in school.8: Why was the weather mentioned in the first paragraph considered a 'spectacle' or unusual event for Tyrik?A: The snowfall frightened Tyrik.B: It was unusual for it to be snowing in Miami.C: Tyrik was not aware that it snowed in Michigan.D: This was the first time Tyrik had ever seen snow.9: Why the author included the information presented in the last paragraph?A: The author presents this information to describe the photo in the article.B: Information provided in the last paragraph provides for a strong conclusion.C: The author wants the reader to know they spent the whole day sledding, building snow forts, and a snowman.D: The author describes the fun Connor and Tyrik had together and how they are building a lasting friendship. PLEASE HELP!! ASAP!! I JUST NEED THE ANSWER!!! I WILL MARK YOU BRAINLIEST!!! Which one of the following most accurately demonstrates the flow of energy in an ecosystem? asun's light > predators > producers bproducers > predators > sun's light csun's light > producers > predators dpredators > sun's light > producers Find the volume of the cylinder. Use 3.14 for . Round your answer to the nearest tenth8in10ina.502.4 in3.b.125.6 in3.c.2009.6 in3.d.251.2 in3. The slope of a line is -3 and it crosses the y-axis at (0,2) Which is the correct equation of the line in slope-intercept form. What is it called when weathered rock is carried away PLZ HELP ME Triangle WXY has coordinates W(2, 4), X(2, 2), and Y(4, 2). Which of the following sets of points represents a dilation of triangle WXY? A. W'(4, 6), X'(4, 4), Y'(8, 4) B. W'(4, 8), X'(6, 4); Y'(8, 4) C. W'(2, 6); X'(2, 2); Y'(4, 2) D. W'(8, 16), X'(8, 8), Y'(16, 8) You roll a fair 6-sided die. what is the probability rolling greater than 4 which best states how the structures of the experts differ Which era makes up the vast majority of Earth's history?O A. MesozoicO B. PalezoicO C. CenozoicO D. Precambrian One of the many benefits of social media is that theyOA. automatically contact friends you are not in touch with.OB. present facts from only objective, credible sourcesOc. allow people with similar interests to join groups.OD. enable people without Internet access to communicate. True or false ????Sea power played an especially important role in the Civil War in the form of Union ships blocking ports in Southern cities. put these fractions in order of size, smallest to largest 1/3 2/5 3/8 What is an example of a direct economic value of biodiversity? *O release of oxygen by green plantsO diseases caused by bacteriaO vaccines created from bacteriaO drinking water provided by watersheds Susan is asked to select 2 shapes at random out of a bag. The bag contains 3 triangles and 2pentagons. She does not replace the first shape before selecting the second shape. What is theprobability that she chooses 2 triangles?ASAP How did alliances contribute to the start of World War I?O Alliances made it easier for nations to negotiate peace treaties.Because of alliances, fewer nations needed to participate in the war.O Alliances required nations to defend each other against aggressionA set of alliances helped nations respond peacefully to problems