Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Q: Question: Viruses were assumed to exist before they were first seen with an electron microscope in which decade? Answer: 1930 ' s

A: Viruses were assumed to exist before they were first seen with an electron microscope in the 1930s. Multiple hypotheses for viral origins have been proposed.
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Q: Question: What is the largest planet in the solar system? Answer: jupiter

A: Jupiter is the largest planet in the solar system. It has bands of different colored clouds, and a long-lasting storm called the Great Red Spot.
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Q: Question: Where in the female body does egg production take place? Answer: ovaries

A:
Egg production takes place in the ovaries. It occurs in several steps:.
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