Problem:OPTIONS:
- has absolutely no impact
- makes the environment wetter
- Is a negative impact
- lowered energy cost
- reduces negative impacts
- animals with backbones
- reducing acid rain
- Riding a bike

Fact 1: Landfills have a negative impact on the environment. Fact 2: Recycling cuts down on landfill. Given the two facts above, how does recycling impact the environment?
****
A: reduces negative impacts

Problem:OPTIONS:
- planets
- wind
- sun's heat
- dust
- gravity
- asteroids
- speed
- forces

Fact 1: Gravity pulls objects towards planets. Fact 2: By the simplest definition, a planet is a large object that orbits a star. Given the two facts above, what pulls objects towards large objects that orbit stars?
****
A: gravity

Problem:OPTIONS:
- hats
- carbon molecules
- sheep
- clouds
- protein
- hair
- keratin
- ice cubes

Fact 1: Thick fur can be used for keeping warm. Fact 2: Sheep are mammals with thick, woolly fur, and hoofed feet. Given the two facts above, what can be used for keeping warm?
****
A: sheep

Problem:OPTIONS:
- emissions
- steal
- add up
- kill
- down
- reduce
- increase
- heat

Fact 1: Using renewable resources to generate power reduces greenhouse gases. Fact 2: Nuclear power generation plants emit no greenhouse gases. Given the two facts above, nuclear power plants do what to greenhouse gases?
****
A:
reduce