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: Most food chains and webs have a maximum of how many trophic levels? Answer: 4

A: A trophic level is a feeding position in a food chain or food web. Most food chains and webs have a maximum of four trophic levels. There is less energy and biomass at higher trophic levels.
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Q: Question: In what state of matter is butter at room temperature? Answer: solid

A: 6. Butter is a fat that is a solid at room temperature. What type of fatty acids does butter contain? How do you know?.
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Q: Question: What is the highest taxon in the classification of living things? Answer: a domain

A:
Prokaryotes are currently placed in two domains. A domain is the highest taxon in the classification of living things. It's even higher than the kingdom.
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