Q: Fact 1: Animals require water for survival. Fact 2: If water is scarce, animals and plants die. Given the two facts above, what will plants die without? | OPTIONS:
- acid
- energy
- phosphorous
- pollution
- oxygen
- photons
- water
- rain
A: water

Q: 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? | 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
A: reduces negative impacts

Q: Fact 1: Mammals breathe with the help of a diaphragm. Fact 2: Belly breathing uses the diaphragm, which helps relax the lungs. Given the two facts above, what breathes by relaxing the lungs? | OPTIONS:
- mammals
- tortoises
- dogs
- chickens
- ducks
- humans
- crocodiles
- animals
A: mammals

Q: Fact 1: Hitting an object causes the particles in that object to vibrate. Fact 2: Frequency is the measurable rate of that vibration. Given the two facts above, what changes to the particles of an object when hit? | OPTIONS:
- Temperature
- frequency
- Energy.
- volume
- molecules
- density
- energy
- heat energy
A: frequency