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andrey2020 [161]
3 years ago
6

Please help me with both questions 20 and 21

Biology
1 answer:
scoundrel [369]3 years ago
5 0
20.4      21.3 are the correct answers
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Help me please ASAP <br> Earth and space btw
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Answer: I think it’s waves

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2 years ago
Explain how and why the walls of the ventricles differ in thickness.<br> and between
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The ventricles of the heart have thicker muscular walls than the atria. This is because blood is pumped out of the heart at greater pressure from these chambers compared to the atria. ... This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.

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The Human Heart — PT Direct

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