Q: Eutrophication, or high levels of nutrients, can cause conditions that deprive fish of what vital gas? Choices: - dioxide - hydrogen - nitrogen - oxygen A:
oxygen

Q: What is the lowest level of organization that can perform all activities required for life? Choices: - organs - nucleii - tissues - the cell A:
the cell

Q: Q: What are the male reproductive cells called? Choices: - mucus - ova - plasma - sperm A:
A: sperm

Question: Q: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? Choices: - precipitation - oxygen - air pressure - temperature A:
Answer: temperature

*Question*
Q: Anabolic reactions require energy, so they are considered what type of reaction? Choices: - autotrophic - exothermic - hydrostatic - endothermic A:
**Answer**
endothermic

Q: Q: The duodenum, the jejunum, and the ileum are the main regions of which organ? Choices: - lungs - large intestine - heart - small intestine A:
A: small intestine