Answer the following question given this paragraph: At the center of a hurricane is a small area where the air is calm and clear. This is the eye of the hurricane. The eye forms at the low-pressure center of the hurricane. You can see the eye of a hurricane in Figure below . Q: What do we call the center of a hurricane where the air is calm and clear? Choices: - nose - epicenter - neck - eye A:
eye
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Answer the following question given this paragraph: Your immune system usually protects you from pathogens and keeps you well. However, like any other body system, the immune system itself can develop problems. Sometimes it responds to harmless foreign substances as though they were pathogens. Sometimes it attacks the body's own cells. Certain diseases can also attack and damage the immune system and interfere with its ability to defend the body. Q: What protects you from pathogens and keeps you healthy? Choices: - immunity system - health system - potent system - immune system A:
immune system
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Answer the following question given this paragraph: Cartilage is a tough, flexible connective tissue that contains the protein collagen. It covers the ends of bones where they meet. The gray tissue in Figure below is cartilage. Q: What is the term for tough, flexible connective tissue that contains the protein collagen? Choices: - muscle - cuticle - membrane - cartilage A:
cartilage
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Answer the following question given this paragraph: Chemical reactions vary widely in the speeds with which they occur. Some reactions occur very quickly. If a lighted match is brought in contact with lighter fluid or another flammable liquid, it erupts into flame instantly and burns fast. Other reactions occur very slowly. A container of milk in the refrigerator will be good to drink for weeks before it begins to turn sour. Millions of years were required for dead plants under Earth's surface to accumulate and eventually turn into fossil fuels such as coal and oil. Q: Exemplified by a lit match bursting into flame or the process that forms fossil fuels, chemical reactions vary greatly in terms of what? Choices: - duration - density - power - speed A:
speed
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