The temperature of the earth
Answer:
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Explanation:
Why It's a Cycle
It is a cycle because oxaloacetic acid (oxaloacetate) is the exact molecule needed to accept an acetyl-CoA molecule and start another turn of the cycle
Sound production is also known as phonation, and involves the process of vibrations generated by a combination of respiration, the vocal organ and the vocal tract. The physical structures that birds use are highly similar to that of humans, and the sounds that is generated travels through respired air.