Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Water and the Nile River are important to Egypt. Given the two facts above, erosion causes the Nile to become:?
OPTIONS:
- Sediment
- shallower
- less wide
- deeper and wider
- homogenous
- colder and wetter
- faster
- Physical weathering

Answer: deeper and wider

Fact 1: Killing microorganisms in food can be used to extend the shelf life of that food. Fact 2: Irradiation kills microorganisms that spoil food. Given the two facts above, what can irradiation do?
OPTIONS:
- Plant growth is reduced
- make food glow
- make food unsafe
- harm consumers
- depress neuronal excitability
- extend the shelf life of food
- major threat to health
- prevent heat loss

Answer: extend the shelf life of food

Fact 1: An animal requires air for survival. Fact 2: It is breathed in by animals and restored to the air by the photosynthesis mechanism of plants. Given the two facts above, animals rely on what for survival?
OPTIONS:
- proteins
- glycogen
- rocks
- sunlight
- stars
- weeds
- cellulose
- plants

Answer:
plants