Answer:
Endosymbiosis
Explanation:
Organelles such as mitochondria and chloroplasts are hypothesized to have originated by Endosymbiosis , by which larger cells engulfed smaller cells.
The endosymbiosis theory is a biological theory of evolution which states that eukaryotic cells were formed from prokaryotic organisms.
monkeys
I think the absence of light will will stop the leaves from photosynthesis because light is necessary to make plant food.
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NADH