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nexus9112 [7]
3 years ago
10

A bad thesis will often contain all of the following, EXCEPT

Biology
1 answer:
Dafna1 [17]3 years ago
5 0
C. Duh. No one has to agree with a successful thesis.
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Select the correct statement about the three-chambered hearts of amphibians and nonbird reptiles. A scheme of blood circulation
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Answer:

The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.

Explanation:

In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.

Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.

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The series of changes that occur after a disturbance in an existing ecosystem is: *
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B- Secondary adaption

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