(Question)
Q: What cells carry oxygen? Choices: - marrow cells - white blood cells - lymph cells - red blood cells A:
(Answer)
red blood cells

(Question)
Q: Fossil fuels are made out of what two objects? Choices: - gases and animals - plants and water - soil and animals - plants and animals A:
(Answer)
plants and animals

(Question)
Q: Scientists ask questions, and then make detailed observations to try to ask more specific questions, in order to develop what? Choices: - Tests - suggests - theories - hypothesis A:
(Answer)
hypothesis