Q: Fact 1: Playing is one way mammals and other animals learn how to behave. Fact 2: Cats are Mammals that Shed Dogs are Mammals that Wag their tails. Given the two facts above, playing is one way what learn how to behave? | OPTIONS:
- otters
- bacteria
- cats
- bears
- ants
- grass
- humans
- bats
A: cats

Q: Fact 1: Boiling means change from a liquid into a gas by adding heat energy. Fact 2: Boiling water produces steam. Given the two facts above, what causes water to become steam? | OPTIONS:
- Condensation
- movement of tectonic plates
- Increasing pressure
- an engine
- evaporation
- heating liquids
- Reducing temperature
- Adding heat energy
A: Adding heat energy

Q: Fact 1: Evolution occurs in response to a change in the environment. Fact 2: Environments reflect native habitats. Given the two facts above, what changes to cause evolution to occur? | OPTIONS:
- Quality of life
- flow of electrons
- Plants growth
- Plant reproduction
- density
- h2o
- earth's rotation
- native habitats
A: native habitats

Q: Fact 1: Earthworm burrows help aerate soil, which is also good for plants. Fact 2: Aeration quickly changes the chemistry of the soil. Given the two facts above, what do earthworms do to soil? | OPTIONS:
- Destroy soil
- Damages them
- Exfoliation
- Converting waste.
- competing for resources
- Compact soil
- Make soil denser
- Change the chemistry
A: Change the chemistry