Answer:
Oxygen and pyruvate.
Explanation:
The krebs cycle is a stage of cellular respiration and occurs in aerobic organisms. In this case, we can say that the Krebs Cycle only occurs in the presence of oxygen, being essential for the completion of cell respiration.
The Krebs cycle only occurs after the completion of glycolysis, as it needs to be initiated by pyruvate, which is a molecule resulting from glycolysis. In this case, in addition to oxygen, the presence of pyruvate is essential for the krebs cycle to occur.
Ans. The Adrenal Gland Recieves a message to stop releasing CRH
Based on the cladogram, the organisms that are most related are A and C since they had the most recent divergence.
<h3>What is a cladogram?</h3>
A cladogram is a diagram which is tree-like showing similarities and differences among organisms as a result of evolutionary changes that occur in the organisms.
In a cladogram, the most similar organisms have the most recent branching along the cladogram.
Based on the description of the cladogram, the most recent branching occurred between A and C.
Therefore, based on the cladogram, the organisms that are most related are A and C.
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