Q: If the platypus reproduces by laying eggs, then what reproduces by laying eggs? Answer choices: - h2o - chickens - mammals - bacteria - platypus - insects - humans - animals
A: platypus

Q: If combustion of oil causes acid rain, then what causes acid rain? Answer choices: - burn - oil - coal - lung - DDT - tar - Cars - wind
A: oil

Q: If erosion of land has a negative impact on the environment, then what sort of impact does erosion have on land? Answer choices: - ambiguous - negative - coastlines - Wind - helpful - positive - mechanical - forces
A: negative

Q: If mammals have a layer of fat under the skin to help keep the body warm in a variety of climates, then mammals have a layer of fat under the skin to help keep the body warm in what? Answer choices: - cozy cabins - by keeping them warm - warm areas - a variety of climates - In the winter - heat or cold - the environment - sunny places
A: a variety of climates