Fact 1: Keeping food cold is used for keeping food fresh. Fact 2: The Purpose of Refrigeration The fundamental reason for having a refrigerator is to keep food cold. Given the two facts above, what is an important function of a refrigertor?

OPTIONS:
- cool the kitchen
- adding heat
- keep meat and vegetables separate
- keep food fresh
- heat energy
- staying warm
- freeze wine
- Electrical energy

Answer: keep food fresh

Fact 1: Fertilization takes place inside the female organism. Fact 2: Humans are complex organisms. Given the two facts above, what kind of females does fertilization take place in?

OPTIONS:
- humans
- fertile
- plants
- bees
- orchids
- sperm
- Flowers
- post-menopausal women

Answer: humans

Fact 1: Gases released during the use of fossil fuels causes global warming. Fact 2: Global warming is a global environmental problem. Given the two facts above, gases released during the use of fossil fuels cause a what?

OPTIONS:
- atmospheric depletion
- global environmental problem
- Plant growth is reduced
- global finances
- depress neuronal excitability
- DNA damage and mutations
- global food increase
- global water stability

Answer: global environmental problem

Fact 1: Bacteria in soil convert atmospheric nitrogen into a form usable by plants. Fact 2: Plants have to have nitrogen to grow. Given the two facts above, what do plants need to grow?

OPTIONS:
- energy
- sunlight
- nutrients
- bacteria
- lifting
- Energy.
- muscle
- darkness

Answer:
bacteria