Fact 1: Plant reproduction requires pollination. Fact 2: An insect visitor is required for pollination and they have a mixed mating system. Given the two facts above, plant reproduction requires?

OPTIONS:
- seeds
- an insect
- bloom time
- sunlight
- energy
- Energy.
- gene flow
- direct energy

Answer: an insect

Fact 1: Moss causes chemical weathering. Fact 2: If the moss was completely dried then it is dead. Given the two facts above, dryness can do what to chemical weathering?

OPTIONS:
- break off
- shrub beds
- cool off
- prevent
- loose soil
- rock
- soils
- improve

Answer: prevent

Fact 1: Gravity pulls objects towards planets. Fact 2: An object's weight is the force of gravity on that object. Given the two facts above, what about an object can cause objects to be pulled towards planets?

OPTIONS:
- phase
- structure
- Energy.
- means
- wind
- energy
- weight
- sunlight

Answer: weight

Fact 1: Light enters the eye through an opening called the pupil. Fact 2: Light is the visible form of electromagnetic energy. Given the two facts above, electromagnetic energy enters the body through what part of the eye?

OPTIONS:
- energy transport
- pupil
- iris
- skin
- eyehole
- lenses
- organ
- nerves

Answer:
pupil