Q: Although they look like big rocks, what structures that serve as habitats for many different types of ocean life are actually alive? Choices: - new forming reefs - natural reefs - southern reefs - coral reefs A:
coral reefs

(Question)
Q: An external opening in the what of amphibians allows wastes and gametes to exit the body? Choices: - anus - oral cavity - urethra - cloaca A:
(Answer)
cloaca

Ques: Q: The job of the nucleolus is to build what? Choices: - chromosomes - electrons - cells - ribosomes A:
Ans: ribosomes

(Q).
Q: What is the sequence of elementary steps that together comprise an entire chemical reaction called? Choices: - reaction circle - mechanical mechanism - basic reaction - reaction mechanism A:
(A).
reaction mechanism

Ques:Q: How do invertebrates reproduce? Choices: - randomly - constantly - asexually - sexually A:

Ans:sexually

Ques: Q: Deserts are generally dry ecosystems having very little what? Choices: - heat - snowfall - mountains - rainfall A:
Ans:
rainfall