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Which of the following is the main purpose of a human community?
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Part of the elbow is formed by the end of the humerus. what do you call this part?
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What do you think scientists face when classifying new organisms?
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Waste water from industries and domestic sources can be treated by chlorination or ultraviolet radiation. there are pros and cons to using either chlorine or uv radiation to kill harmful microorganisms. what is one reason chlorination would be preferred over ultraviolet radiation? a) chlorine only eliminates visible impurities and is ineffective against microorganisms. b) chlorine not only kills bacteria but provides a residual effect on returning microorganisms. c) uv radiation can be used only to treat drinking water and is ineffective in treating waste water. d) ultraviolet radiation is more effective
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Define: This is the activity of catching aquatic organisms, either for food or as a sport. If not ma...
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