Q: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed? Choices: - molecules zones - pressure wave - measurements zones - compression zones A:
compression zones

(Question)
Q: Sea-lilies, sea cucumbers and sea stars fall into what class of organism? Choices: - snakes - mollusks - crabs - echinoderms A:
(Answer)
echinoderms

Ques: Q: What type of work called occurs when a system pushes back the surroundings against a restraining pressure? Choices: - shape work - contrast work - retention work - expansion work A:
Ans: expansion work

(Q).
Q: Ponds and lakes are examples of what kind of biome? Choices: - standing lake biome - standing marine biome - standing liquid biome - standing freshwater biome A:
(A).
standing freshwater biome

Ques:Q: What is the term for when gravity pulls soil, mud, and rocks down cliffs and hillsides? Choices: - mass pressure - avalanche - mass momentum - mass movement A:

Ans:mass movement

Q: What process of gradual change is the source of diversity of life on earth? Choices: - variation - creation - development - evolution A:
evolution