Explain why tropical rain forests contain a large variety of
plants and animals.

Because of the climate and the protection that the trees provide. Because rain forests are in tropical regions, they get a large amount of sunlight which helps the plants grow. These plants then feed the animals and help them thrive. The canopy-like structure gives animals places to hide and live.

Explanation:

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all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex