(Question)
Answer the following question given this paragraph: Gamma rays are the most dangerous type of radiation. They can travel farther and penetrate materials more deeply than can the charged particles emitted during alpha and beta decay. Gamma rays can be stopped only by several centimeters of lead or several meters of concrete. It's no surprise that they can penetrate and damage cells deep inside the body. You can learn more about the effects of gamma radiation on people at this URL: http://library. thinkquest. org/3471/radiation_effects_body. html . Q: What is the most dangerous type of radiation? Choices: - sunlight rays - beta rays - plasma rays - gamma rays A:
(Answer)
gamma rays

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Answer the following question given this paragraph: Spring tides occur during the new moon and full moon. The Sun and Moon must either be in a straight line on the same side of Earth, or they must be on opposite sides of Earth. Their gravitational pull combines to cause very high and very low tides. Spring tides have the greatest tidal range. Q: What occurs during the new moon and full moon, due to gravitational pull? Choices: - spring waves - spring floods - spring storms - spring tides A:
(Answer)
spring tides

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Answer the following question given this paragraph: 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. Q: Archaeans produce what kind of gas as a waste product? Choices: - sulfide - carbon monoxide - carbon dioxide - methane A:
(Answer)
methane