Q: What do clouds trap into the atmosphere at night? Choices: - seawater - light - smog - heat A:
heat

(Question)
Q: Glutathione is a low-molecular-weight compound found in living cells that is produced naturally by what? Choices: - blood - brain - amino acids - liver A:
(Answer)
liver

Ques: Q: What kind of current flows in just one direction? Choices: - physical current - slow current - Alternating current - direct current A:
Ans: direct current

(Q).
Q: Maintaining a high metabolic rate takes a lot of what? Choices: - food - calories - fuel - energy A:
(A).
energy

Ques:Q: Greater reflection off what atmospheric layer allows am radio waves to travel even farther at night than they can during the day? Choices: - stratosphere - exosphere - troposphere - ionosphere A:

Ans:ionosphere

Question: Q: What three characteristics do waves have? Choices: - structure , refraction and deflection - theory , refraction and deflection - spin, refraction, and deflection - reflection, refraction and deflection A:
Answer:
reflection, refraction and deflection