Q: Q: Both endotherms and ectotherms control what through behavioral responses to changes in the environment? Choices: - sleep cycles - hormones - gas temperature - body temperature A:
A: body temperature

Q: Q: Which other planet in the solar system is the easiest to observe from earth? Choices: - Pluto - Mercury - Jupiter - mars A:
A: mars

Q: Q: What are the two main parts of the human nervous system? Choices: - lungs, brain - lungs, spinal cord - brain, heart - brain, spinal cord A:
A: brain, spinal cord

Q: Q: What structure supports the body, protects internal organs, produces blood cells, and maintains mineral homeostasis? Choices: - fossil - skin - cuticle - skeleton A:
A: skeleton