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.
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Question: Question: During what type of reproduction do two haploid gametes join in the process of fertilization to produce a diploid zygote? Answer: sexual reproduction

Answer: During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote.

Question: Question: Protists are the simplest of what? Answer: eukaryotes

Answer: Protists are the simplest eukaryotes. They are easiest to define by what they are not. Protists are not animals, plants, or fungi.

Question: Question: What is another name for a broad explanation that is supported by a great deal of evidence? Answer: theory

Answer:
A : A theory is needed to explain gravity. In science, a theory is a broad explanation that is supported by a great deal of evidence.