My best guess would be c because b makes no since we as humans do not have photosynthesis and are considered living organisims, d is also wrong because the brain requires oxygen, and its not a because the brain is made of cells.
Glucose particles are ingested from gastrointestinal cells into the circulatory system. The circulation system then, at that point, conveys the glucose particles all through the body. Glucose enters every cell of the body and is involved by the cells mitochondrion as fuel.
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In addition to maintaining international peace and security, the United Nations protects human rights, delivers humanitarian aid, promotes sustainable development and upholds international law.
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Answer:genetic variation helps ensure that not all organisms are the same.
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