instruction:
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.
question:
Question: Reflected in their relatively high level of intelligence and their ability to learn new behaviors, what organs tend to be relatively large in primates? Answer: brains
answer:
Primates tend to have bigger brains for their body size than other mammals. This is reflected in their relatively high level of intelligence and their ability to learn new behaviors.

question:
Question: In what state of matter is butter at room temperature? Answer: solid
answer:
6. Butter is a fat that is a solid at room temperature. What type of fatty acids does butter contain? How do you know?.

question:
Question: Molds, pollen, and pet dander are examples of air pollution with what type of source? Answer: biological
answer:
Biological sources of air pollution include molds, pollen, and pet dander.