Q: 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? Choices: - liver - scales - Eyes - skin A:
A: skin

Q: Answer the following question given this paragraph: The most basic division of living plants is between nonvascular and vascular plants. Vascular plants are further divided into seedless and seed plants. Seed plants called gymnosperms produce seeds in cones. Seed plants called angiosperms produce seeds in the ovaries of flowers. Q: What are the two divisions of vascular plants? Choices: - root and seed - seedless and semi-seeded - aquatic and terrestrial - seedless and seed A:
A: seedless and seed

Q: Answer the following question given this paragraph: All chemical reactions, even exothermic reactions, need activation energy to get started. Activation energy is needed to bring reactants together so they can react. Q: What do all chemical reactions need to get started? Choices: - expression energy - kinetic energy - potential energy - activation energy A:
A: activation energy

Q: Answer the following question given this paragraph: Animals, like the bee in Figure below , pollinate flowering plants. Many crop plants depend on pollination by wild animals. Q: Bees and other wild animals perform what function on flowering plants, making them vital for crop reproduction? Choices: - pesticide - irrigation - fertilizer - pollenation A:
A: pollenation