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: What is the small intestine lined with that helps with nutrient absorption? Answer: villi
answer:
Image copyright Sebastian Kaulitzki, 2013. The small intestine is lined with tiny villi that help absorb nutrients . Used under license from Shutterstock. com.

question:
Question: At equilibrium reactants and what are equally abundant? Answer: products
answer:
Reactants and products are equally abundant at equilibrium.

question:
Question: Some flatworms are free-living carnivores that live mainly in which type of habitats? Answer: aquatic
answer:
Many flatworms are parasites with vertebrate hosts. Some are free-living carnivores that live mainly in aquatic habitats.