C: Their separation.
As they get further apart their gravities have less influence on each other.
I believe that a pair of homologous structures in this case is; Maple leaf and oak leaf. Homologous structures that have similar ancestries and common traits, however they may not have the same function in an organism. They appear in different animals or organisms, underlining anatomical commonalities demonstrating a descent from a common ancestor. Examples include the arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale.
The cardiac output may be calculated as the product of heart rate and stroke volume. Thus, the cardiac output in this situation is 9.9L/min.
<h3>What is Stroke volume?</h3>
Stroke volume may be characterized as the volume of blood output with each beat of the heart which is 110 ml/beat in this question.
Cardiac output = Heart rate × Stroke volume.
90 × 110ml/min = 9,900ml/min = 9.9L/min.
Therefore, the cardiac output in this situation is 9.9L/min.
To learn more about Cardiac output, refer to the link:
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Answer:
I don't know the exact word they want, but organisms use energy for motion and any activity they perform regularly. (eg: hunting, climbing, digging, etc.)
