Explain why scientists classify organisms and how scientists classify species.
Question 7 of 30
Which of the following is the best definition of an ecosystem?
O A. A system formed by the interactions of all of the living things
within an area
B. A system formed by the interactions of organisms of the same
species that live in the same area
C. A system formed by the interactions of living organisms with the
nonliving physical environment
D. A system formed by the interactions of all of the nonliving things
that exist in the same area
Answer:
C
Explanation:
ecosystem is living AND non living things
The best definition of an ecosystem is option C: "A system formed by the interactions of living organisms with the nonliving physical environment."
What is an ecosystem?An ecosystem is a community of living organisms, such as plants, animals, and microorganisms, interacting with each other and their nonliving environment, including the atmosphere, soil, and water.
This interaction creates a functional system that can be characterized by energy flow and nutrient cycling. The other options are not accurate definitions of an ecosystem, as ecosystems involve both living and nonliving components, and the interactions are not limited to a single species.
Ecosystems are not isolated, and they can interact with other ecosystems. For example, rivers and streams can transport nutrients and organisms downstream, connecting different ecosystems such as a forest and a freshwater system. Similarly, the atmosphere can transport pollutants and other materials across vast distances, affecting ecosystems far from their source.
In summary, an ecosystem is a complex, interconnected system where living organisms interact with each other and the non-living components of their environment. Understanding the functions and interactions within ecosystems is critical to developing effective management strategies for conserving biodiversity and maintaining the ecosystem services that humans depend on.
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the xx chromosome type is found in__
Answer:
[tex]females \: \: \: \: \: \\ it \: is \: your \: right \: answer \: [/tex]
The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for example, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection?
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Answer:b
Explanation:
NADP+ is converted into NADPH during the light-dependent reactions. Where does the hydrogen
come from?
Groups of ______________
A. Specialized Genes
B. Specialized cells
C. specialized proteins
form____________
A. homeostasis
B. specialized cells
C. organs/tissues
and cooperate to help organisms maintain _________________
A. homeostasis
B. organs/tissues
C. specialized cells
Answer:
B
C
A
Explanation:
cells make up tissues and organs ,and matianing homestais is the goal of your body.
all you need is in the photo
ASAP
Answer:
translation; mRNA --> protein.
It includes three steps: initiation, elongation, and termination.
Explanation:
After the mRNA is processed, it carries the instructions to a ribosome in the cytoplasm. Translation occurs at the ribosome, which consists of rRNA and proteins
Neurons and muscle cells perform different functions. In the body, these cells have the same . The function of muscle cells is , while the function of neurons is to send nerve signals.
Answer: Nerve cells and muscle cells are excitable because their cell membrane can produce electrochemical impulses and conduct them along the membrane.
Explanation:
Answer:
Gentic Makeup, and Movement
Explanation:
Which statement is NOT true of soils?
Weathered parent material makes up most of the B-horizon.
All of Earth's systems are represented in a soil.
The C-horizon of a soil can contain unweathered rocks.
Organic matter gives the A-horizon in a soil a dark color.
Answer:
b
Explanation:
The statement that is NOT true of soils is: "All of Earth's systems are represented in a soil."
How much soil is important on earth ?Soil is a critical resource on Earth, as it is essential for supporting plant growth and providing a habitat for a wide variety of organisms.
While soils are complex and dynamic systems that interact with many other Earth systems, not all Earth systems are represented in a soil. For example, soils do not directly represent the atmosphere or the hydrosphere, although they interact with both of these systems in important ways.
The other three statements are true of soils:
Weathered parent material makes up most of the B-horizon: The B-horizon is typically composed of weathered rock and mineral fragments that have been transported downward from the A-horizon.
The C-horizon of a soil can contain unweathered rocks: The C-horizon is the deepest layer of a soil and can contain unweathered bedrock or other geological material.
Organic matter gives the A-horizon in a soil a dark color: The A-horizon is the uppermost layer of a soil and is often darker than lower layers due to the presence of organic matter, which can give it a dark brown or black color.
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What percentage of offspring will have pink flowers
Answer:
50%
Explanation:
The pink flower donates the r allele and produces pink flowers in 50% of the offspring.
we need a box image to predict how many offspring of pink flowers there will be :/
What kind of genetic disorder is represented in the pedigree?
Answer:
an autosomal recessive disorder
Explanation:
Autosomal recessive disorders are inherited diseases caused by the presence of two copies (alleles) of an abnormal gene, thereby only homo-zygous recessive individuals are affected by this type of disease. In consequence, although both parents don't express the disease, they can be carriers and pass this recessive disorder to their offspring who express the disease. In this case, the pedigree shows that heterozygous parents are not affected but they are carriers of the recessive allele for this disease, thereby some offspring express the trait. The black circle (female) and the black square (male) indicate affected individuals in the pedigree chart. Since both parents are heterozygous, 1/4 (25%) of all offspring would be expected to have the autosomal recessive disorder.
DNA is always coiled up tightly in chromosomes.
True or false?
PLS HELP!! brainliest + extra points! it's easy but i didn't study tbh:)
Answer:
Guanine to Cytosine
Explanation:
G always matches C
A always matches T
Hope it helps
Plz mark Brainiest.
(ASAP please help short writing)
A. Describe the role of the promoter in eukaryotic gene expression. Explain how a negative regulatory molecule could inhibit transcription at the promoter.
B. Identify TWO events that occur during RNA processing. Explain how RNA splicing increases the variation of mRNA molecules.
C. Describe the role of miRNA in gene expression.
Answer:
Explanation:
A. The role of promoter in eukariotic gene expression is It is to bind transcription factors that regulate transcription initiation. This molecule is so important because control the binding of RNA polymerase to DNA. The promoter region may be short or very long; the longer the promoter is, the more protein binding space is available. A negative regulatory molecule has the possibilty to inhibit transcription at the promoter because these molecules block the binding of RNA polymerase to the promoter region, thus not allowing the initiation of transcription, in some particular cases, the negative regulator binds to the lac repressor and will bind to the promoter in the same site where RNA polymerase would bind to.
B. Two process that occur during RNA processing are RNA splicing and 5′ capping, 3′. RNA splicing is a procces known for removing the introns from the pre-RNA and stuck back together the restant parts, exons. This process has as a goal form a mature mRNA that does not contain the intron sequences. RNA splicing has effect on variation of mRNA molecules because through a process called alternative splicing more than one mRNA can be made from the same gene.
C. Even though they are not quite the same thing miRNA and negative regulatory molecules have the same role, which is inhibit the translation and silence genes. They regulate gene expression by binding to the 3'-UTR of their target mRNAs and destabilizing the mRNA and translational silencing, repressing protein production. Even so, under specific circumstances, miRNA can activate translation or regulate transcription.
What is the main idea of this text?
A. Climate change is a complex and unpredictable process involving
feedback loops.
B. Disagreements about climate change have prevented scientists from
finding real solutions to global warming.
C. Wallace Broecker's theory may have been incorrect, but he presented
some worthwhile ideas.
D. Climate change can be completely reversed if carbon dioxide production
is changed.
Answer:
should be b
Explanation:
Answer:
disagreements about climate change have prevented scientific from finding real solutions to global warming
In order to create a big storm, the HIGH LEVEL TEMPERATURE had to be... A.Very Cold B.Cold C.Cool
Question:
In order to create a big storm, the HIGH LEVEL TEMPERATURE had to be... A.Very Cold B.Cold C.Cool
Answer:
A, because in order to create a big storm, the temperature has to be at least 40-20 degrees Fahrenheit (below 30 is freezing point, aka snow), and that would be weather where you would need to wear a thick jacket and warm pants.
If this helped, your welcome! Please know that I might be wrong, and if I am, I am truly sorry for that. But If you would, please make me brainliest.
- niaxfandoms (ig and yt)
what is natural selection?
Answer: The process whereby organisms better adapted to their environment tend to survive and produce more offspring.
Francis grew some plants for a science experiment. The sketch of his experiment after several days is shown. Which tropism is Francis most likely investigating?
The correct answer to this open question is the following.
Unfortunately, you did not provide the sketch or the photo that shows what Francis is doing. So we do not know what you are talking about.
However, trying to help you, we did some deep research and can comment on the following.
If the photo shows a plan under the light of a lamp, moving towards the lamp direction, then tropism is Francis most likely investigating is phototropism.
To better understand the concept, Tropism is the movement of a plant towards the direction of an influence exerted on it. This means that an external factor is introduced in order to make the plant grow through an external influence.
So when we use the term phototropism, this means that the plant responds to the direction of the source of light and grows in that direction. That is what Francis is using in his science experiment.
Answer:
phototropism
Explanation:
if you want an in depth answer, look at the other one, not mine lol! (I attatched the image)
Mr. Shepherd is at a football game on a cold day. How does his body maintain a relatively constant body temperature? What is this process called?
Answer:
1. Mr. Shepherd maintain a relative constant body temperature by preventing loss of heat.
2 This process is called HOMEOSTASIS
Explanation:
Homeostasis is the process whereby living organisms maintain a stable internal environment despite changes in conditions to the external environment. It is necessary that the body undergoes this process in order to guarantee survival.
According to this question, Mr. Shepherd is at a football game on a cold day. This means that in order to maintain a stable internal temperature, the body must preserve heat in the body and prevent its loss via sweating.
The regulation of body temperature is maintain fundamentally by the thermoregulatory center located in the preoptic region of the hypothalamus, this process is called homeostasis, which is the balance that occurs in the internal environment.
The main thermoregulatory mechanism is the increase or decrease in blood flow to the skin, through vasodilation and vasoconstriction.
Thermal sensing cells or thermal sensors for heat and cold are located on the skin surface (peripheral receptors), in the pre-optic region of the anterior hypothalamus (central receptors) and in other parts of the body.When it is hot, blood circulation to the skin increases (it becomes red) and when it is cold it decreases (the skin becomes paler).In addition to blood flow, the body also uses sweat to regulate temperature, sweating evaporates water on the surface of the skin and heat is lost, thereby lowering body temperature.Therefore, we can conclude that the maintenance of body temperature is closely related to another important indicator, the internal environment (homeostasis).
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What is a change in an organism that allows for it to survive in its
environment?
A.homologous
B.vestigial
C.variation
D.adaptation
Answer:
d adaptation
Explanation:
its an adaptation because its a change that helps the organism survive
helpppppp plssssssss
Please can anyone help me ill make you the brainiest, I need help with these questions!
1.How many moles of oxygen react with 10.5 moles of methane?
2.How many moles of methane react with 10.7 moles of oxygen?
3.How many moles of carbon dioxide are produced from 80 moles of methane?
4.How many moles of water are produced from 800 moles of methane?
5.How many grams of oxygen will react with 85 grams of methane?
Answer:
the moles of oxygen react only 1.05 moles
Explanation:
because the formula of methane is CH4 so it has 10 molecule so 10.5 ÷10 =1.05
Shamus complains that he isn’t feeling well, he thinks a cold/flu is coming on. He takes cold medicine and lays down. In an hour or two, he decides the medication isn’t working, so he takes another dose, thinking more will work better. Shamus takes one more dose of cold medication, 3 hours after his second dose and finally settles down for bed. In the morning, Shamus is found dead in his bed by his roommate.
Answer in terms of livor and rigor, what stages and where in the body is it present
Answer:
The common cold and the flu may seem very similar at first. They are indeed both respiratory illnesses and can cause similar symptoms. However, different viruses cause these two conditions, and your symptoms will gradually help you differentiate between the two.
Both a cold and the flu share a few common symptoms. People with either illness often experience:
a runny or stuffy nose
sneezing
body aches
general fatigue.
As a rule, flu symptoms are more severe than cold symptoms. Another distinct difference between the two is how serious they are. Colds rarely cause additional health conditions or problems. The flu, however, can lead to sinus and ear infections, pneumonia, and sepsis. To determine whether your symptoms are from a cold or from the flu, you need to see your doctor. Your doctor will run tests that can help determine what’s behind your symptoms. If your doctor diagnoses a cold, you’ll likely only need to treat your symptoms until the virus has had a chance to run its course. These treatments can include using over-the-counter (OTC) cold medications, staying hydrated, and getting plenty of rest.If you have the flu, you may benefit from taking an OTC flu medicine early in the virus’ cycle. Rest and hydration are also very beneficial for people with the flu. Much like the common cold, the flu just needs time to work its way through your body.
Explanation:
can someone help brainliest
Answer: 1. founder effect
2. evolution
3. natural selection
4. species
5. geographically isolated
Explanation: Good luck! :D
In general, how might choosing a small sample size affect a scientific investigation?
A. A small sample size is more precise than a large sample size.
B. A small sample size is not as reliable as a large sample size.
C. A small sample size is less expensive than a large sample size.
D. A small sample size has fewer dependent variables than a large sample size.Following the War of 1812, the United States reached a number of agreements with foreign countries. Match the parts of each
Answer:
a small sample size is not as reliable as a large sample size
Explanation:
Why does your vaccination status affect more people than just you?
Answer:
so i belive ur talking about the corona vaccinations so my answer is below! :D
Explanation:
if you get vaccinated, you are helping yourself and other people because it is most likely that you wont get corona if u have a vaccine. When you dont get corona that means that there are less people dying and you will reduce the level of deaths because ur not gonna get corona and give it to someone else. Once you get the vaccine you still have to be protected and wear a mask when you go outside just in case to protect your self and someone elses life. So, thats why ur vaccination status affects more people than just you. :D
also i just realized that you might not be talking about the corona vaccinations and u can be talking about the normal vaccines but the paragraph that i just wrote can be meant for normal vaccines as well :)
The nucleus of a cell is most responsible for what function?
Answer:
The main function of the cell nucleus is to control gene expression and to mediate DNA replication during the cell cycle. The nucleus provides a site for transcription in the cytoplasm, allowing levels of regulation that are not available in prokaryotes.
Which of the following is the best example of diffraction?
Answer:
you voice echoing back when you shout in a canyon
Explanation:
Fossil records: Location
A fossil record is a group of fossils which has been analyzed and arranged chronologically and in taxonomic order.
how can use of fertilizers affect respiratory health?
a) they directly produce gas particles of air pollution
b) they can contaminate bodies of water
c) they can contain contaminants that can enter the air during storms or high winds
d) fertilizer use does not impact respiratory health
Answer: C) They can contain contaminants that can enter the air during storms or high winds.
Explanation: A is wrong because I got it wrong (Sorry, can't give much explanation there).
B is wrong because water contamination does not directly relate to respiratory health.
D is wrong because fertilizers can impact respiratory health (Explanation seems lack-luster, but I feel like this is common sense).
Hope this helps :)
Answer:
C
Explanation:
They can contain contaminants that can enter the air during storms or high winds.