Answer:
I don't know the options but my best guess would be erosion. Every time water comes on the beach is takes sand which erodes the beach. Hope that helps!
Nephron helps the urinary system to rid off metabolic waste in our system.
they need energy because there cells need to reproduce
Answer:
Cell respiration begins with Glycolysis
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Explanation:
Glycolysis is the first and initial step in the cellular respiration. Cellular respiration is the anaerobic process, which takes place in cytosol of the cells. Two molecule of pyruvate(CH3COCOO-) are formed from 1 molecule of glucose(C6H12O6)through glycolysis. The NADH and ATP are high energy molecules formed when the free energy are released. It is the process which takes place through a series of ten enzyme catalysed reactions. 10 enzymes are required to break down the sugar molecule. It occurs in cytoplasm.