Q: Which organ of the body do large tapeworms attack or block? Choices: - liver - heart - kidneys - intestines A:
intestines

Q: The hot liquid rock on the surface is called what? Choices: - Molten - volcano - flow - lava A:
lava

Q: Q: What is the name of the thin layer that acts as a boundary between the stratosphere and the mesosphere? Choices: - spirogyra - ozone layer - spicule - stratopause A:
A: stratopause

Question: Q: Unlike pure substances, mixtures have a what? Choices: - efficient composition - unique composition - complex composition - variable composition A:
Answer: variable composition

*Question*
Q: Solution nodes and antinodes are both areas of wave interference, but they differ in the presence of what condition? Choices: - radiation - gravity - speed - motion A:
**Answer**
motion

(Q).
Q: What is the molten material deep within the earth? Choices: - volcanic mass - crystals - lava - magma A:
(A).
magma