Q: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? Choices: - density - volume - altitude - temperature A:
temperature

Q: Nearly all apicomplexans are parasites of what? Choices: - stars - plants - fungi - animals A:
animals

Q: Q: What is the term for the smallest blood vessels? Choices: - muscles - Aortas - arteries - capillaries A:
A: capillaries

Question: Q: About 50% of all animal species died off between the mesozoic and which other era? Choices: - jurassic - precambrian - cretaceous - cenozoic A:
Answer: cenozoic

*Question*
Q: Blood calcium levels are tightly regulated by the what system? Choices: - digestive - cardiovascular - nervous - endocrine A:
**Answer**
endocrine

Q: Canoe paddles, nutcracker, and hammer are examples of what type of simple machine? Choices: - lock - handle - pivot - lever A:
lever