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8. Which process requires oxygen?<br />a) aerobic respiration<br />b) anaerobic respiration<br /><br />Answer: a) aerobic respiration<br /><br />Explanation: Aerobic respiration is the process that requires oxygen. It is a type of cellular respiration that uses oxygen to break down glucose and produce energy in the form of ATP. Anaerobic respiration, on the other hand, does not require oxygen and occurs in the absence of oxygen.<br /><br />9. Which organisms need to make their own food?<br />a) plants<br />b) animals<br /><br />Answer: a) plants<br /><br />Explanation: Plants are the organisms that need to make their own food. They are autotrophic organisms that can produce their own organic compounds through the process of photosynthesis. Animals, on the other hand, are heterotrophic organisms that rely on consuming other organisms for their food.