Q: Q: Do waves move faster when particles are close to each other or far away? Read this paragraph and choose the correct option from the provided answers: The speed of most waves depends on the medium through which they are traveling. Generally, waves travel fastest through solids and slowest through gases. That's because particles are closest together in solids and farthest apart in gases. When particles are farther apart, it takes longer for the energy of the disturbance to pass from particle to particle. Choices: - unaffected - far away - open - close A:
A: close

Q: Q: What type of compound is essential to life? Read this paragraph and choose the correct option from the provided answers: Water is essential to life because chemical reactions within cells take place in water. Most people can survive only a few days without consuming water to replace their water losses. How do you lose water?. Choices: - carbon - oxygen - nitrogen - water A:
A: water

Q: Q: Archaeans produce what kind of gas as a waste product? Read this paragraph and choose the correct option from the provided answers: Many archaeans live in close relationships with other organisms. For example, large numbers live inside animals, including humans. Unlike many bacteria, archaeans don't harm their hosts. None of them is known to cause human disease. Archaeans are more likely to help their hosts. For example, archaeans called methanogens live inside the gut of cows (see Figure below ). They help cows digest tough plant fibers made of cellulose. They produce methane gas as a waste product. Choices: - sulfide - carbon monoxide - carbon dioxide - methane A:
A: methane

Q: Q: What kind of water are cattails adapted for with narrow, strap-like leaves? Read this paragraph and choose the correct option from the provided answers: Living in water does present challenges to plants, however. For one thing, pollination by wind or animals isn't feasible under water, so aquatic plants may have adaptations that help them keep their flowers above water. For instance, water lilies have bowl-shaped flowers and broad, flat leaves that float. This allows the lilies to collect the maximum amount of sunlight, which does not penetrate very deeply below the water's surface. Plants that live in moving water, such as streams and rivers, may have different adaptations. For example, cattails have narrow, strap-like leaves that reduce their resistance to the moving water (see Figure below ). Choices: - stagnant water - saline water - turbulent water - moving water A:
A: moving water