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 made of gases that are essential for photosynthesis and other life activities? Answer: atmosphere
answer:
The atmosphere is made of gases that are essential for photosynthesis and other life activities.


question:
Question: Fungi are unique in having cell walls made of what? Answer: chitin
answer:
Fungi are a kingdom in the domain Eukarya that includes molds, mushrooms, and yeasts. Most fungi are multicellular. They are unique in having cell walls made of chitin.


question:
Question: What physical property of matter reflects how closely packed the particles of matter are? Answer: density
answer:

Density is an important physical property of matter. It reflects how closely packed the particles of matter are.


