Absorption it regulates the pH of the filtrate by exchanging hydrogen ions in the interstitium for bicarbonate ions in the filtrate; it is also responsible for secreting organic acids, such as creatinine and other bases, into the filtrate.
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Answer:
it affects weight loss by limiting the amount your stomach can hold, there by lessening the amount you eat and how much turns into fat.
Explanation:
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reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.
