Where did most of the comets in the Kuiper belt come from?

Comets originate from the Kuiper belt while asteroids originate from the Oort cloud. The Kuiper belt is within the solar system while the Oort cloud is outside the solar system.

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clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.