(Q).
Q: Earth is the only planet in the solar system that has what element, which is essential for human life, present in all three of its states? Choices: - helium - oxygen - carbon - water A:
(A).
water

(Q).
Q: Unlike wood and glass, steel is an example of a material that responds to what force? Choices: - kinetic - electromagnetic - thermal - magnetic A:
(A).
magnetic

(Q).
Q: What is another name for molecular compounds? Choices: - phenotype compounds - oxidized compounds - synthetic compounds - covalent compounds A:
(A).
covalent compounds