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Trees obtain carbon from _______. a. decaying organisms b. sunlight c. the atmosphere d. none of the above
Weegy: Trees obtain carbon from the atmosphere (More)
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Asked 7/11/2013 5:45:33 AM
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Plants in the rainforest _______. a. effectively conserve and retain water b. have low levels of transpiration c. release 50-80% of their water back into the ecosystem d. are adapted to conditions of drought
Weegy: The answer is : c. release 50-80% of their water back into the ecosystem . (More)
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Asked 7/11/2013 5:51:24 AM
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How are individual atoms of oxygen formed in the stratosphere? a. Individual oxygen atoms are formed when oxygen molecules collide with each other. b. Individual oxygen atoms are formed in the sun. c. Individual oxygen atoms are formed during photosynthesis. d. Individual oxygen atoms are formed when UV rays strike oxygen molecules.
Weegy: The correct answer is: d. Individual oxygen atoms are formed when UV rays strike oxygen molecules. User: Ozone is formed when _______. a. two oxygen molecules combine b. an individual oxygen atom combines with an oxygen molecule c. ultraviolet radiation breaks apart four oxygen molecules d. oxygen molecules are broken into separate atoms Weegy: the answer is b. an individual oxygen atom combines with an oxygen molecule. User: How does the absorption of ultraviolet radiation by the ozone layer help sustain life? a. This process helps maintain the temperature of the Earth. b. It keeps a low level of harmful ultraviolet radiation from reaching living organisms. c. This process keeps ozone concentrations in the troposphere at lower levels. d. All of the above are true. Weegy: How does the absorption of ultraviolet radiation by the ozone layer help sustain life? a. This process helps maintain the temperature of the Earth. [ [ ] ] (More)
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Asked 7/12/2013 6:21:03 AM
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