Plants and other autotrophs make food out of “thin air”—at least, they use carbon dioxide from the air to make food. Most food is made in the process of photosynthesis. This process provides more than 99% of the energy used by living things<span> on Earth. Photosynthesis also supplies</span>Earth's atmosphere<span> with </span>oxygen<span>.
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This process that releases energy from digested food is called cellular respiration. This body uses all the energy that is coming from the digested food (which is mostly coming from the glucose.) This type of respiration is called aerobic respiration since the release of energy includes oxygen.
The answer you are looking for is B. Bubbles form when two chemicals are mixed together.