You are presented with the quiz "what is cells converting oxygen and carbohydrates into carbon dioxide, water, and energy?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cellular respiration is when a cell converts from oxygen and carbohydrates into carbon dioxide, water, and energy" and "cellular respiration is a requirement for life".   So, what's the best answer to the question?
requirement for life
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You are presented with the quiz "What can separate salt from water?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "evaporation can be used for separating a solute from a solvent in a solution" and "for example, in salt water, salt is the solute and water is the solvent".   So, what's the best answer to the question?
evaporation
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You are presented with the quiz "What can generate little bursts of heat by shivering?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "mammals can also generate little bursts of heat by shivering" and "polar bears are mammals".   So, what's the best answer to the question?
polar bears
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You are presented with the quiz "What is the base unit of measurement for a balance?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "abalance is used for measuring mass of an object" and "mass The base unit of mass is the gram".   So, what's the best answer to the question?

grams
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