Q: The human heart is located within what cavity? Choices: - pelvic - spinal - abdominal - thoracic A:
thoracic

Q: Earthquakes at convergent plate boundaries mark the location of the what? Choices: - abducting lithosphere - speeding lithosphere - shorting lithosphere - subducting lithosphere A:
subducting lithosphere

Q: Q: What is the process in which many new species evolve in a short period of time to fill available niches called? Choices: - adaptation - learned behavior - spontaneous mutation - adaptive radiation A:
A: adaptive radiation

Question: Q: Arteries have thinner wall layers and valves and move blood by the action of skeletal what? Choices: - marrow - collagen bands - hormones - muscle A:
Answer: muscle

*Question*
Q: The renal hilum is the entry and exit site for structures servicing which organs? Choices: - ovaries - lungs - brains - kidneys A:
**Answer**
kidneys

Q: Q: What do contour lines that are close together indicate? Choices: - deep slope - close slope - flat slope - steep slope A:
A: steep slope