Q: What helps ensure that, at least, some species will survive environmental change? A:

OPTIONS:
- reproduction
- ecosystem
- spontaneous mutation
- biodiversity

Answer: biodiversity

Q: Binding of acetylcholine to receptors on the muscle fiber leads to a? A:

OPTIONS:
- repolarization
- conduction
- excitation
- depolarization

Answer: depolarization

Q: What is considered the center of the solar system? A:

OPTIONS:
- nebulla
- earth
- heat
- sun

Answer: sun

Q: What kind of family is haumea part of? A:

OPTIONS:
- eoan family
- a moclobemide family
- orbital family
- a collisional family

Answer:
a collisional family