Best Answer: well, organisms of the same genus have very similar characteristics... so its easier for scientists to infer something about one species when they have another species classified as very similar.<span>
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<span>Hormones move from one location to another through </span>THE BLOOD.
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Cellular respiration uses energy in glucose to make ATP. Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. ... This results in a net gain of two ATP molecules. Life first evolved in the absence of oxygen, and glycolysis does not require oxygen.
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<em><u>Hope this helps..</u></em></h2>
By looking at there chromosomes such as the x and y gametes
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I hope and this result Will serve you
