<span>His work, which was documented and repeatable, contradicted the accepted cell theory, so a change in the theory was required.
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Small or large disasters can easily cause genetic drift to small populations because the population is small. There are not enough of them to keep the area populated when a natural disaster occurs sometimes
Answer:
endosymbiosis.
Explanation:
By the beginning of the 20th century, researchers thought that plastids and mitochondria could come from bacteria. These would have been ingested by primitive cells and live within them in symbiosis.
Answer:
Food provides the glucose that is a reactant in cellular respiration.
