(Question)
Answer the following question given this paragraph:   Some people think bones are like chalk: dead, dry, and brittle. In reality, bones are very much alive. They consist of living tissues and are supplied with blood and nerves.   Q: Rather than being dead, dry, and brittle, what support structures of the human body consist of living tissues and are supplied with blood and nerves?   Choices:  - lungs  - feet  - hearts  - bones  A:
(Answer)
bones


(Question)
Answer the following question given this paragraph:   Living things must have chemical energy from food to power life processes. Most of the chemical energy in food comes ultimately from the energy in sunlight.   Q: Most of food's chemical energy ultimately comes from what source?   Choices:  - plants  - air  - minerals  - sunlight  A:
(Answer)
sunlight


(Question)
Answer the following question given this paragraph:   Amphibians have permeable skin that easily absorbs substances from the environment. This may explain why they seem to be especially sensitive to pollution. Monitoring the health and survival of amphibians may help people detect pollution early, before other organisms are affected.   Q: What group of animals has permeable skin that makes them vulnerable to pollution?   Choices:  - fish  - mammals  - reptiles  - amphibians  A:
(Answer)

amphibians