Question: Answer the following question given this paragraph: Why are so many amphibian species threatened by extinction, and why should you care? The second question is easy. Amphibians control pests, may be a source of new medicines, and help feed many other animals. The nature of amphibian skin may help explain why so many amphibian species are at risk. Their skin easily absorbs substances from the environment, such as pollutants in water or air. Therefore, they may suffer from poor environmental quality before other animals do. As such, they may provide an early-warning system of environmental damage. Q: Which part of the body of amphibians, easily absorbs substances from the environment? A:
OPTIONS:
- liver
- scales
- Eyes
- skin
Answer: skin

Question: Answer the following question given this paragraph: 26.3 Angiosperms Angiosperms are the dominant form of plant life in most terrestrial ecosystems, comprising about 90 percent of all plant species. Most crops and ornamental plants are angiosperms. Their success comes from two innovative structures that protect reproduction from variability in the environment: the flower and the fruit. Flowers were derived from modified leaves. The main parts of a flower are the sepals and petals, which protect the reproductive parts: the stamens and the carpels. The stamens produce the male gametes in pollen grains. The carpels contain the female gametes (the eggs inside. Q: What is the dominant form of plant life in most terrestrial ecosystems, comprising about 90 percent of all plant species? A:
OPTIONS:
- pteridophytes
- gymnosperms
- bryophytes
- angiosperms
Answer: angiosperms

Question: Answer the following question given this paragraph: Carbon behaves as a metal because it conducts heat and electricity well. It is a nonmetal because it is black and brittle and cannot be made into sheets or wires. Q: Carbon behaves as a metal because it conducts which two things well? A:
OPTIONS:
- heat and magnetism
- heat and water
- electricity and oxygen
- heat and electricity
Answer:
heat and electricity