Answer:
Single loop
Double loop
Explanation:
Circulatory system in the body helps in the transport of oxygen, nutrients and other important substances in the body.
Single loop circulatory systems involves blood passing through the heart only once on each circuit around the whole of the blood circulation system of the animal.
Double loop means there are two loops in our body in which blood circulates. One is oxygenated which means oxygen rich and the other is deoxygenated, which means it has little to no oxygen, but a lot of carbon dioxide.
Answer:
d.no pollution
Explanation:
it doest create any pollution at all
Answer:
When certain large molecules are unable to move through the membrane without the help of channel proteins
Explanation:
Facilitated diffusion occurs when large molecules that are unable to pass through a membrane on their own make use of channel proteins to move from one side of the membrane to the other. Facilitated diffusion can occur when a liquid on one side of a membrane has a higher osmotic pressure than a liquid on the other side of the membrane, but it isn’t a required feature of facilitated diffusion. Similarly, facilitated diffusion can occur when there’s a large membrane potential present, but it isn’t a required feature of facilitated diffusion. Facilitated diffusion doesn’t require the use of energy, so the presence of ATP is irrelevant to facilitated diffusion occurring.
Answer:
Explanation:
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body. pl give brainly
Answer:
C.
Zebras depend on soil to grow grass, which the zebras eat.
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