Q: Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Canyon formed as a consequence of river erosion. Given the two facts above, what are formed by erosion? | OPTIONS:
- mountains
- hills
- canyons
- Sediment
- loose soil
- rocks
- soils
- streams
A: canyons

Q: Fact 1: Lack of moisture in the air causes low amounts of rainfall. Fact 2: Rainfall is just one form of precipitation. Given the two facts above, what causes low amounts of precipitation? | OPTIONS:
- Plant growth is reduced
- a hemisphere is tilted away from the sun
- more condensation
- extra moisture in the air
- excess water supply
- fissures of hot, acidic water
- lack of moisture in the air
- a tree falling
A: lack of moisture in the air

Q: Fact 1: Aplant requires sunlight for photosynthesis. Fact 2: Photosynthesis is the process of making food. Given the two facts above, what do plants require to make food? | OPTIONS:
- nutrients
- sunlight
- photons
- Energy.
- Light
- Proteins
- power
- heat energy
A: sunlight

Q: Fact 1: Fertilization occurs when sperm swim to an egg inside an archegonium. Fact 2: Each archegonium contains a single egg that is embedded in the prothallus. Given the two facts above, what happens inside the single egg embedded inside the prothallus ? | OPTIONS:
- Earth revolving around the sun
- The area was once underwater
- gastropod shells
- it keeps an organism warm
- remains of prehistoric life
- fertilization occurs
- allow growth
- It helps them survive
A: fertilization occurs