(Q).
Q: What is the exchange of energy from one part of the universe to another called? Choices: - cold - temperature - humidity - heat A:
(A).
heat

(Q).
Q: What is the lightest molecule? Choices: - oxygen - helium - silicon - hydrogen A:
(A).
hydrogen

(Q).
Q: Unlike amphibians, reptiles do not have what stage? Choices: - egg - reproductive - adult - larval A:
(A).
larval