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Alex17521 [72]
3 years ago
8

Hydrogen is usually found on earth.

Biology
1 answer:
Goshia [24]3 years ago
7 0
I believe it is C. as liquid hydrogen. 
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3 years ago
Why do bases have to be read in groups of 3?
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3 years ago
2. Define chain reaction.
kondor19780726 [428]

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a chemical reaction or other process in which the products themselves promote or spread the reaction, which under certain conditions may accelerate dramatically.

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2 years ago
How many different types of atoms make up an element?
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109 different types

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4 years ago
Which of the following statements is true?
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How the heart works

The heart is a large, muscular organ that pumps blood filled with oxygen and nutrients through the blood vessels to the body tissues. It's made up of:

4 chambers. The 2 upper chambers are the atria. They receive and collect blood. The 2 lower chambers are the ventricles. They pump blood to other parts of your body. Here is the process:

The right atrium receives blood from the body. This blood is low in oxygen. This is the blood from the veins.

The right ventricle pumps the blood from the right atrium into the lungs to pick up oxygen and remove carbon dioxide.

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The left ventricle pumps the blood from the left atrium out to the body, supplying all organs with oxygen-rich blood.

4 valves. The 4 valves are the aortic, pulmonary, mitral, and tricuspid valves. They let blood flow forward and prevent the backward flow.

Blood vessels. These bring blood to the lungs, where oxygen enters the bloodstream, and then to the body:

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The pulmonary artery channels oxygen-poor blood from the right ventricle into the lungs, where oxygen enters the bloodstream.

The pulmonary veins bring oxygen-rich blood to the left atrium.

The aorta channels oxygen-rich blood to the body from the left ventricle

7 0
3 years ago
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