Q: The force that pulls objects toward the earth is what? A:

OPTIONS:
- Friction
- Magnetic force
- Tension
- gravity

Answer: gravity

Problem: OPTIONS:
- predictive observation
- theoretical observation
- hypothetical observation
- actual observation
Q: Q: The validity of thought experiments, of course, is determined by this? A:
Answer: actual observation

Problem:OPTIONS:
- time
- pack
- predators
- prey

Q: In grazing, a predator partially eats but does not kill what? A:
****
A: prey

Q: What causes a lot of geological activity on the earth? A:
OPTIONS:
- landslides
- weather
- natural selection
- plate tectonics
plate tectonics

Q: What process do all species use to make the next generation? A:
OPTIONS:
- separation
- differentiation
- variation
- reproduction

Answer: reproduction

input with options: Q: What is caused by human actions that releases chemical substances and particles into the air? A:
OPTIONS:
- CFO pollution
- Improper Emissions
- heavy pollution
- air pollution
output:
air pollution