Q: What is found in abundance in the polar ice caps and under the surface of mars? Choices: - carbon - bacteria - fossils - water A:
water

(Question)
Q: Most hormones are controlled by what type of feedback, which causes the hormone to decrease its own production? Choices: - positive - neutral - unusual - negative A:
(Answer)
negative

Ques: Q: What is the double-membrane structure that constitutes the outermost portion of the nucleus? Choices: - energy fold - nuclear fold - energy envelope - nuclear envelope A:
Ans: nuclear envelope

(Q).
Q: What happens when a neutral atom gains or loses electrons? Choices: - it loses protons - it gains protons - it loses neutrons - it becomes an ion A:
(A).
it becomes an ion

Ques:Q: Sharing a phylum with insects, spiders, daddy-long-legs, scorpions, and ticks belong to what class? Choices: - annelids - reptiles - mammals - arachnids A:

Ans:arachnids

Ques: Q: What structure consists of an outer layer of cells called the trophoblast and an inner cell mass called the embryoblast? Choices: - nucleus - cytoplasm - cell wall - blastocyst A:
Ans:
blastocyst