Q: A major source of primary pollutants is the burning of oil and coal, which are types of what? Read this paragraph and choose the correct option from the provided answers: Outdoor air pollution is made of chemical particles. When smoke or other pollutants enter the air, the particles found in the pollution mix with the air. Air is polluted when it contains many large toxic particles. Outdoor air pollution changes the natural characteristics of the atmosphere. Primary pollutants are added directly to the atmosphere. Fires add primary pollutants to the air. Particles released from the fire directly enter the air and cause pollution ( Figure below ). Burning of fossil fuels such as oil and coal is a major source of primary pollutants ( Figure below ). Choices: - erosion fuels - renewable fuels - greenhouse gases - fossil fuels A:
fossil fuels
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Q: What is another term for the voice box? Read this paragraph and choose the correct option from the provided answers: The larynx , also called the "voice box," is found just below the pharynx. Your voice comes from your larynx. Air from the lungs passes across thin tissues in the larynx and produces sound. Choices: - pharynx - pancreas - optical nerve - larynx A:
larynx
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Q: What is the term for animals that cannot raise their body temperature on their own? Read this paragraph and choose the correct option from the provided answers: They are ectothermic , meaning their temperature depends on the temperature of their environment. Ectothermic animals are cold-blooded in that they cannot raise their body temperature on their own. This is unlike humans, whose temperature is controlled from inside the body. Choices: - endothermic - catabolic - warm-blooded - ectothermic A:
ectothermic
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Q: What do you call the high and low points of transverse waves? Read this paragraph and choose the correct option from the provided answers: In a transverse wave, such as a wave in a rope, the medium vibrates at right angles to the direction that the wave travels. The high points of transverse waves are called crests, and the low points are called troughs. Choices: - echos and troughs - waves and troughs - bands and troughs - crests and troughs A:
crests and troughs
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