During exercise stroke volume increases because more blood is sent back to the heart due to the muscles squeezing blood in the veins
I will have to say D) they keep the prey population low so they will be less likely to deplete resources such as food, water, and shelter... hope i helped!!
Answer:
Structure and function of the cell membrane
The cell membrane is semipermeable (or selectively permeable). ... The unique structure of the cell membrane allows small substances (like oxygen or carbon dioxide) to easily pass through.
Explanation:
A. an explanation based on prior scientific knowledge or observations
i just took the quiz and got the answer correct.
It forms the outer layer of a cell. It gives an animal cell its shape. It is selectively permeable.
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