Q: Water, carbon dioxide, and what other element are important agents of chemical weathering? Choices: - helium - methane - sulfur - oxygen A:
oxygen

(Question)
Q: The hepatitis virus attacks only cells of what organ? Choices: - lungs - kidney - brain - liver A:
(Answer)
liver

Ques: Q: Pinocytosis or "cellular drinking," occurs when the plasma membrane folds inward to form a channel allowing dissolved substances to enter what? Choices: - proteins - nucleus - homeostasis - cell A:
Ans: cell

(Q).
Q: What process is the opposite of fusion and releases energy only when heavy nuclei are split? Choices: - activation - osmosis - diffusion - fission A:
(A).
fission

Ques:Q: In what form is the heat absorbed when you heat ice and it reaches a temperature of 0 c? Choices: - geothermal energy - mechanical energy - radiation energy - potential energy A:

Ans:potential energy

Ques:Q: What is the name of the layer above the mesosphere? Choices: - exosphere - lithosphere - intersphere - thermosphere A:

Ans:
thermosphere