Problem:OPTIONS:
- cold in a fridge
- hydrogen and oxygen
- hot in a pan
- layers of fat
- in the trash
- out in the yard
- Electrical energy
- staying warm

Fact 1: Keeping food cold is used for keeping food fresh. Fact 2: On inspection the temperature of the fridge was found to be adequate for food storage. Given the two facts above, keeping things what is a way to adequately store them?
****
A: cold in a fridge

Problem:OPTIONS:
- tectonic plates coliding
- wind and erosion
- remains of prehistoric life
- Earth revolving around the sun
- rapid expansion
- microevolution extrapolated
- the wearing away of rock
- tectonic plates being pushed together

Fact 1: Macroevolution occurs over geologic time above the level of the species. Fact 2: Macroevolution is simply microevolution extrapolated over longer periods of time. Given the two facts above, what occurs over geologic time above the level of the species?
****
A: microevolution extrapolated

Problem:OPTIONS:
- animals
- bacteria and algae
- density
- body water
- scarce resources
- salt and water.
- an organism's body
- oxygen

Fact 1: Phytoplankton are bacteria and algae that use sunlight to make food. Fact 2: Most copepods feed on phytoplankton. Given the two facts above, what do most copepods feed on?
****
A: bacteria and algae

Problem:OPTIONS:
- engines
- Energy.
- heat
- Gasoline
- energy
- fossil fuels
- coal
- photons

Fact 1: An automobile engine transforms chemical energy into mechanical energy. Fact 2: Gasoline is a mix of hundreds of chemicals. Given the two facts above, what do cars use for energy?
****
A:
Gasoline