Q: What phenomenon sometimes causes harmful alleles to become fixed? A:
OPTIONS:
- natural selection
- competition
- spontaneous mutation
- genetic drift
genetic drift

Q: Because the earth is covered with vegetation, cellulose is the most abundant of all what? A:
OPTIONS:
- impurities
- vegetables
- rocks
- carbohydrates

Answer: carbohydrates

Question: Q: Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by what? A:
OPTIONS:
- unusually rapid rotation
- particularly rapid rotation
- Slow rotation
- extremely rapid rotation
Answer: extremely rapid rotation

input with options: Q: Which human body system is a complex network of nervous tissue that carries electrical messages throughout the body? A:
OPTIONS:
- the localized system
- the lymph system
- the bacterial system
- the nervous system
output: the nervous system

Q: Q: What kind of power plant uses energy to heat water that becomes steam and spins turbines? A:

OPTIONS:
- hydroelectric
- coal
- wind
- nuclear power plants

A: nuclear power plants

Q: What helps push the fetus from the uterus during birth? A:
OPTIONS:
- glands
- tremors
- Shaking
- contractions
contractions