Answer:
Living things are able to reproduce themselves. If organisms fail to do this, populations will diminish and disappear as their members die from old age, disease, accidents, predation, etc.
Tissues make up organs like your heart, your liver, your brain, spleen, stomach, and so on. With no cells, there are no tissues or organs. Humans would not exist. All organisms, with the exception of viruses, are made of one or more cells.
Explanation:
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