Fact 1: Landfills have a negative impact on the environment. Fact 2: An ecosystem is an environment and all the members of that environment. Given the two facts above, what do landfills have a negative impact on?
OPTIONS:
- The atmosphere
- Ecosystems
- earth
- animals
- Impact crater
- Garbage
- humans
- Refuse containers

Answer: Ecosystems

Fact 1: Using a car causes pollution. Fact 2: Pollution is a damaging excess of contaminants. Given the two facts above, how do cars damage the environment?
OPTIONS:
- Battery useage
- exposure to the sun
- Emitting an excess of contaminants
- they travel great distances
- Using too much gas
- Causing accidents
- depress neuronal excitability
- within and around

Answer: Emitting an excess of contaminants

Fact 1: Most ecosystems get energy from sunlight. Fact 2: Lakes and rivers are extremely complex ecosystems. Given the two facts above, where do lakes get energy from?
OPTIONS:
- a delta
- water
- petroleum
- sun's heat
- gasoline
- Evaporation
- sunlight
- heat

Answer:
sunlight