The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma. The terrestrial planets are the four innermost planets in the solar system. ... Without life, most of the oxygen would soon become part of the compounds on the planet's surface.
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Hello!
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❖ Your body might need new cells to replace the old, damaged, cells that need to be repaired, or dead cells. Your body might also need more cells for you to grow.
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Answer:
It prevents their species from going extinct.