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Biodiversity is a variation of organisms (plants, animals and bacteria) in the world or a specific habitat. Biodiversity helps to keep an ecosystem healthy because there is more variation of food and different organisms can rely on each other for survival. Also it offers a larger more reliable food chain and if one species is suddenly wiped out, it won't impact the ecosystem as much as it would if the biodiversity was smaller.
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Answer:
Make up the skull and composed of the brain
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Hello.
The Moon makes a full orbit around the Earth approximately once every 28 days. This means that the Moon orbits the Earth around 13 times in a year.
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Subduction i think,when they are pushed together one subducts forming a trench.im probably not right,sorry