The environment was a tropical ocean
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During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. ... The replicated chromosomes have an X shape and are called sister chromatids
Explanation:
A lot of cells are needed to create a living organism. infinity cells are needed
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the correct answer is A please mark me the brainliest
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C. Electron transport chain