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Mainly because the other answers don’t go well together with the statement
Our Sun rotates about the center of our Galaxy at 1000 years that is the answer to <span>What is the period of the Sun's orbital motion about the center of the Galaxy 1</span>000 years
The answer is comet. the paragraph explains comet best
The Rainforest, because it has a lot of rain and is a very wet and humid climate which cause more types of vegetation to grow.
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