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Biology, 21.06.2019 13:30
Which of the following choices is not an effective solution to the energy waste related to inefficient lighting? a. using low-pressure sodium lighting sources b. pointing lights on billboards and street signs upward c. placing light sources on time controls d. shielding light to direct it downward
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Biology, 21.06.2019 21:30
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Biology, 22.06.2019 05:30
Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above
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