What type of worm has a circulatory system?
Nematodes
Segmented worms
Roundworms
Flatworms
Your answer will be Segmented worms. Segmented worms have a closed circulatory system in which blood is enclosed in blood vessels.
The distance time graphs for two objects are shown below: look at the picture. Which statement is true? Both objects move at variable speeds. Both objects move at a constant speed. Object A is moving at constant speed but Object B is moving at variable speed. Object A is moving at variable speed but Object B is moving at constant speed.
Can you get this done before 10:40 pls
Answer:
The last statement is correct
Explanation:
The neighborhood swimming pool is 20 feet long, 8 feet wide, and 4 feet deep. Which formula below should be used to find how much water the pool can hold?
Answer:
The formula to use is
VOLUME=LENGTH×BREADTH×HEIGHT
PLEASE GIVE BRAINLIEST
Tell me why in Louisiana it always gotta freaking have a hurricane
why do we see different phases of the moon.
Answer:
The Moon itself does not generate light; it is lit up by the Sun. As the Moon orbits the Earth, the portion of illuminated Moon that we see changes – giving rise to the phases of the Moon. ... Sometimes the Earth, Moon and Sun are aligned such that the Earth is directly between the Sun and the Moon.
Explanation:
Answer:
Shadows
Explanation:
The Moon Dosent Produce Light,Therefore In Diffrent Cycles Shadows Cover Diffrent Parts Of The Moon Dpending Where The Suns Light Is Hitting It.
Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1.
Answer: as you add the base it added some PH. The Ph lever of white vinager is2.4 - 3.4
Explain how you could use the solubility of a substance to make a saturated solution.
Answer:
Add solute to liquid until dissolving stops.
Evaporate a solvent from a solution until the solute begins to crystallize or precipitate.
Add seed crystals to a solution that is supersaturated.
Explanation:
some students observe four different lab investigations. The students record their observations in a table.
Investigation
Observations
1
A beaker of water is
heated on a hot plate. Bubbles form in
the water, and steam is given off.
2
Oil is added to a beaker of water. Oil forms a layer on top
of the water
3
Sand and iron filings are mixed in a beaker. A magnet is
then used to separate the iron filings from the sand.
4
A piece of chalk is placed in a beaker of vinegar Bubbles
form as a gas is given off.
Which investigation most likely involved a chemical reaction?
Answer:
Number 4 is an example of a chemical reaction
Explanation:
heThe chalk is reacting with the vingear which is creating a new substance. The new substance is the gas that the reaction gives off.
Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1. Explain
Answer:as you add the base it added some PH. The Ph lever of white winegaer is2.4 - 3.4
Explanation:
√225/√25 = ?? hurry please I'm stuck on it
Answer:
√225/√25 =3
The answer is 3
Explanation:
Answer:
The answer is 3
Explanation:
What happens to salt water and fresh water when you try to mix them.
Answer:
the lighter fresh water rises up and over the salt water
Explanation:
this is because the salt water is denser
Answer:
When trying to mix fresh/salt water it leads to variable and dynamic chemical conditions, especially salinity because fresh water flowing into the estuary is less salty and less dense than water from the ocean, it often floats on top of the heavier seawater.
Explanation:
<3
HURRY PLEASE
What forces act upon a maglev train? Select the THREE (3) that apply.
air resistance
air resistance
friction with the ground/track
friction with the ground/track
magnetic fields that attract and repel
magnetic fields that attract and repel
gravity
gravity
applied forces from other vehicles
Magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train.
What is maglev train?
A maglev train is a train that is propelled by the effect of magnets on both the train and the tracks.
Force that act upon maglev trainGravityFriction Magnetic fieldsThus, we can conclude that, magnetic fields that attract and repel, gravity, and friction with the ground/track are the forces that act upon a meglev train.
Learn more about maglev train here: https://brainly.com/question/16196328
#SPJ2
A scientist designs some experiments to record how various substances change. She then reviewed her results. Which of the investigations listed below is an example of how the substance changed chemically?
Sodium metal reacts violently and explodes with water.
After heating aluminum in a crucible, it began melting at 1200 degrees F
Hydrochloric acid is stored inside plastic containers.
Grinding Copper sulfate allowed it to be dissolved much quicker.
Answer:
Sodium reacting with water and exploding.
Explanation:
the others are just melting, dissolving and storing a chemical. also I know its a chemical reaction because its the only answer that involves more than one chemical and has an actual change.
hope this helps :)
1.Which of the following is an example of a non-renewable resource?
A.Wind
B.Solar (Sun)
C.Trees
d.petroleum
2.Burning fossil fuels releases which gas into the air, making the Earth warmer?
A.Oxygen
B.Water
D.Nitrogen
D.Carbon Dioxide
Which of the following is NOT a way of making heat?
A. turning on an electric light
B. eating a sandwich
C. rubbing sticks together
D. melting an ice cube
Answer:
b. You should prolly know this tho lol
Explanation:
How does resource extraction affect local and national economies?
Answer:
The direct channels by which extraction can affect the economy are of particular interest. The development of mines or oil and gas fields can result in significant shocks to a regional economy, generating jobs and drawing in capital from other regions and countries.
Explanation:
Describe the concentration of hydronium ions and hydroxide ions when a base is added slowly to a white vinegar solution. The pH of white vinegar is 3.1.
Answer:https://brainly.com/question/22666401
Tis question is already answered my frnd
Help me with an easy question worth 25 points
What makes a material dense if we are calculating the Speed of light in thousand miles per second.
Answer: Velocity
Explanation:
The density of a material affects the speed that a wave will be transmitted through it. In general, the denser the transparent material, the more slowly light travels through it. Glass is denser than air, so a light ray passing from air into glass slows down.
Answer:
C is most dense i think lol
Explanation:
1. What is the geologic time scale? Explain how the geologic time scale is a model.
2. How many millions of years was the Paleozoic?
3. During what era did the dinosaurs live?
4. During what period where the first early human relatives found?
30 POINTS FOR THE BRAINLIEST
What patterns do you observe?
How are the two waves similar?
How are they different?
Answer:
they both increase then decrease
they don't have the same points
they have 2 different electric fields
Explanation:
ASAP PLLEEASE HURYYYYYYYYYYRRRRRRRRRRRRYY (NO FILES FOR ME NEEDING TO DOWNLAOD PLEASE!)
1.Fill in the blank with the correct term to make the statement true.
During the (day/night)
at the beach, the land cools down
(faster/slower)
than the
(land/ocean).
Because of this, the air over the land is
(Warmer/cooler) than the air over the ocean. The
(More/less)
dense air rises over the ocean and the cooler,
(More/less)
dense air blows in from over the land creating a
(sea/land)
breeze.
2.Which statement is true about winds?
Winds always blow from low to high pressure.
Winds always blow from water to land.
Winds always blow from land to water.
3. Winds always blow from high to low pressure. How do landmasses impact the movement of air and water?
They stop all movement of both air and water.
They speed up the air and water and allow it to pass though.
They change the direction and slow them down.
They slow down the air but speed up the water.
Answer:
1.Fill in the blank with the correct term to make the statement true.
During the (night)
at the beach, the land cools down
(slower)
than the
(ocean).
Because of this, the air over the land is
(Warmer) than the air over the ocean. The
(More)
dense air rises over the ocean and the cooler,
(More)
dense air blows in from over the land creating a
(sea)
breeze.
2.Which statement is true about winds?
Winds always blow from low to high pressure.
true
Winds always blow from water to land.
false
Winds always blow from land to water.
false
3. Winds always blow from high to low pressure. How do landmasses impact the movement of air and water?
They stop all movement of both air and water.
They speed up the air and water and allow it to pass though.
They change the direction and slow them down.
think this is it
They slow down the air but speed up the water.
pt:2
answering the pictures
9- I don know sorry
15-B
16-A
Explanation:
just trying to help LET ME KNOW IF IT'S WORNG
Solar: converts mechanical energy of _____________ into electricity.
Wind
The Sun
Water
Predict whether an ionic compound will dissolve in a nonpolar solvent.
Make a claim about whether or not a piece of pottery is an example of a fossil? Summarize evidence to support your claim and explain your reasoning.
Answer:
A piece of pottery is deemed NOT a fossil because fossils are the remnants of a once living thing,a piece of pottery is a historic item,a relitivitely old item.
Frozen ice caps in the Arctic Ocean are composed of?
A water vapor
B salt water
C fresh water
D a mixture of salt and fresh water
What happens to salt water and fresh water when you try to mix them.
Answer:
Salt water overtakes the fresh water
Explanation:
Answer:
It all becomes salt water, unless there is enough fresh water to dissolve the salt.
Explanation: Science/Chemistry
A disease caused by the inflammation of mucus membranes inside the bronchial tubes. There are more than 3 million U.S. cases a year.
Inflammation can have causes that aren't due to underlying disease. Examples include injuries such as sprains and strains, overuse, or insect bites.
Mr. Rogers wanted to study the affect of different types of music would have on students ability to complete the IA. What is his dependent variable? What Is his independent variable ?
A. classrooms
B. types of music
C. IA scores
D. students
Given the following equation: Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
If you start with 4.50 grams of Magnesium (Mg), how many grams of Hydrogen gas (H2) will you theoretically produce? If you actually produce 0.25 grams, what is your percent yield?
please help
If you start with 5.5 liters of hydrogen peroxide (H2O2), how many molecules of oxygen gas (O2) will be produced?
Answer:
2.75 mol O2
Explanation:
2 H2O2 = 2 H2O + O2 is the formula
heres a picture of the work