(Q).
Q: What is made of gases that are essential for photosynthesis and other life activities? Choices: - air - ocean - stratosphere - atmosphere A:
(A).
atmosphere

(Q).
Q: What is considered the center of the solar system? Choices: - nebulla - earth - heat - sun A:
(A).
sun

(Q).
Q: Kinetic and potential are two forms of what? Choices: - pressure - fuel - exercise - energy A:
(A).
energy