Fact 1: If an object is black then that object absorbs all visible light. Fact 2: Light grains are quartz, Black grains are coal. Given the two facts above, what absorbs all visible light?

OPTIONS:
- apples
- coal
- Green
- coral
- skin
- bamboo
- glass
- eyes

Answer: coal

Fact 1: Hydropower requires damming a river. Fact 2: Streams and rivers are crossed on rocks, beaver dams, on fallen trees or by wading. Given the two facts above, hydropower requires beavers damming what?

OPTIONS:
- lakes with large rocks
- a hydraulic system
- organisms and their habitat
- streams with two branches
- water with old boards
- scarce resources
- fissures of hot, acidic water
- streams with fallen trees

Answer: streams with fallen trees

Fact 1: Soil can be depleted of nutrients. Fact 2: Fertilizers add nutrients to the soil. Given the two facts above, soil can be depleted of a thing that fertilizers can what to soil?

OPTIONS:
- grow
- add
- loss
- pH
- harm
- corn
- peat
- kill

Answer: add

Fact 1: Building housing developments usually requires replacing animal habitats. Fact 2: Habitat Hairy-nosed wombats are terrestrial and build burrows. Given the two facts above, building housing developments usually requires replacing what?

OPTIONS:
- money
- gold reserves
- deuterostomes
- one celled organisms
- loose soil
- swamp vegetation
- animal burrows
- clocks

Answer:
animal burrows