Q: Gastropods, cephalopods, and bivalves are examples of what class? Choices: - animals - invertebrates - cetaceans - mollusks A:
mollusks

(Question)
Q: What refers to the union of a male and female of the same species for reproduction? Choices: - asexual reproduction - dating - behavior - mating A:
(Answer)
mating

Ques: Q: What molecule is made of two hydrogen atoms and one oxygen atom? Choices: - Oxygen - carbohydrate - lipids - water A:
Ans: water

(Q).
Q: Coral reefs and tropical rainforests are ecosystems known for what, contributing greatly to the species in existence on earth? Choices: - commensalism - mass migrations - spontaneous mutation - biodiversity A:
(A).
biodiversity

Ques:Q: Impenetrable what underlies the soil of the forest? Choices: - structure - topsoil - groundwater - bedrock A:

Ans:bedrock

Ques:Q: What process of allows multicellular organisms to grow and repair themselves? Choices: - proteins division - atom split - DNA division - cell division A:

Ans:
cell division