Answer the following question given this paragraph: Check to see that gas lines are made of flexible material so they do not rupture. Any equipment that uses gas should be well secured. Q: Gas lines should be made of what so they do not rupture? Choices: - typically material - Hard material - adjustment material - flexible material A:
flexible material
(Question)
Answer the following question given this paragraph: Most of the atmosphere is nitrogen, but it doesn't do much. Carbon dioxide and oxygen are the gases in the atmosphere that are needed for life. Q: What is the most prevalent gas in the atmosphere, but not the most vital for life? Choices: - carbon dioxide - oxygen - argon - nitrogen A:
(Answer)
nitrogen
Ques: Answer the following question given this paragraph: The Energy Cycle Whether the organism is a bacterium, plant, or animal, all living things access energy by breaking down carbohydrate molecules. But if plants make carbohydrate molecules, why would they need to break them down, especially when it has been shown that the gas organisms release as a "waste product" (CO2) acts as a substrate for the formation of more food in photosynthesis? Remember, living things need energy to perform life functions. In addition, an organism can either make its own food or eat another organismeither way, the food still needs to be broken down. Finally, in the process of breaking down food, called cellular respiration, heterotrophs release needed energy and produce "waste" in the form of CO2 gas. In nature, there is no such thing as waste. Every single atom of matter and energy is conserved, recycling over and over infinitely. Substances change form or move from one type of molecule to another, but their constituent atoms never disappear (Figure 8.20). CO2 is no more a form of waste than oxygen is wasteful to photosynthesis. Both are byproducts of reactions that move on to other reactions. Photosynthesis absorbs light energy to build carbohydrates in chloroplasts, and aerobic cellular respiration releases energy by using oxygen to metabolize carbohydrates in the cytoplasm and mitochondria. Both processes use electron transport chains to capture the energy necessary to drive other reactions. These two powerhouse processes, photosynthesis and cellular respiration, function in biological, cyclical harmony to allow organisms to access life-sustaining energy that originates millions of miles away in a burning star humans call the sun. Q: Whether the organism is a bacterium, plant, or animal, all living things access energy by breaking down these? Choices: - lipid molecules - protein molecules - oxygen molecules - carbohydrate molecules A:
Ans: carbohydrate molecules
(Q).
Answer the following question given this paragraph: Conserving heat is also important, especially in small mammals. A small body has a relatively large surface area compared to its overall size. Because heat is lost from the surface of the body, small mammals lose a greater proportion of their body heat than large mammals. Mammals conserve body heat with their hair or fur. It traps a layer of warm air next to the skin. Most mammals can make their hair stand up from the skin, so it becomes an even better insulator. Even humans automatically contract these muscles when they are cold, causing goosebumps (see Figure below ). Mammals also have a layer of fat under the skin to help insulate the body. This fatty layer is not found in other vertebrates. Q: In mammals, hair or fur help conserve bodily what? Choices: - food - energy - water - heat A:
(A).
heat
Ques:Answer the following question given this paragraph: Courtship behaviors occur in many other species. For example, males in some species of whales have special mating songs to attract females as mates. Frogs croak for the same reason. Male deer clash antlers to court females. Male jumping spiders jump from side to side to attract mates. Q: What type of behavior is frogs croaking or deer clashing antlers an example of? Choices: - instincts - learned behavior - mating - courtship A:

Ans:courtship
Question: Answer the following question given this paragraph: Toxic heavy metals include mercury and lead. Mercury is used in some industrial processes. It is also found in fluorescent light bulbs. Lead was once widely used in gasoline, paint, and pipes. It is still found in some products. Q: Mercury and lead, which was once widely used in paint and gasoline, are examples of what type of metals? Choices: - gaseous heavy metals - alloys - sulfuric heavy metals - toxic heavy metals A:
Answer:
toxic heavy metals