Q: Fact 1: Coal is used to produce electricity by burning in coal-fire power stations. Fact 2: Electricity is really the movement of electrons. Given the two facts above, coal is used to produce the movement of electrons by what in coal-fire power stations? | OPTIONS:
- cooling
- energy
- rotating
- burning
- heat
- engines
- mining
- sun's heat
A: burning

Q: Fact 1: Corals form large colonies in shallow tropical water. Fact 2: Coral communities are found only in warm waters. Given the two facts above, shallow tropical water is what? | OPTIONS:
- porous
- low in biodiversity
- cold
- uninhabited
- pretty
- rain
- warm
- calm
A: warm

Q: Fact 1: Plant reproduction requires pollination. Fact 2: Perennial types are planted outside in spring. Given the two facts above, what reproduction requires pollination? | OPTIONS:
- humans
- They lay eggs
- Tropical
- bees
- insects
- subtropical
- perennials
- heterotrophs
A: perennials

Q: Fact 1: Being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time. Fact 2: Fens form non-acidic peat. Given the two facts above, being burried under soil and mud changes how what forms? | OPTIONS:
- cacti
- deltas
- fens
- potash
- bamboo
- rivers
- roots
- mildew
A: fens