Answer:
erosion
Explanation:
erosion is when weathering or natural weather breaks down and changed the physicals and chemical properties of a rock
Oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
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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