Fact 1: Earthworm burrows help aerate soil, which is also good for plants. Fact 2: Aerating means getting air into the wine. Given the two facts above, earthworm burrows are good for plants because they?
OPTIONS:
- get air into soil
- reducing acid rain
- eliminate toxins
- hydrate roots
- preventing heat transfer
- It helps them survive
- kill pests
- important habitats

Answer: get air into soil

Fact 1: Alight bulb converts electrical energy into light energy when it is turned on. Fact 2: Aphoton is a packet of light energy. Given the two facts above, a light bulb emits what when turned on?
OPTIONS:
- movement
- warmth
- photons
- sunlight
- motion
- sun's heat
- dangerous
- Heart rate

Answer: photons

Fact 1: Gene flow occurs when individuals move into or out of a population. Fact 2: Gene flow tends to decrease differentiation. Given the two facts above, what tends to occur when individuals move into or out of a population?
OPTIONS:
- competing for resources
- extinction
- matter is destroyed
- metabolic reaction
- rapid exponential growth
- seed dispersal
- decreased differentiation
- permineralization

Answer:
decreased differentiation