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Biology, 21.06.2019 14:30
Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided
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Biology, 22.06.2019 01:30
Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas
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Biology, 22.06.2019 19:00
Identify the area on the image where the force of attraction is the strongest.
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Biology, 23.06.2019 05:40
The amount of radioactive isotopes contributing heat to earth is greater now than it was when earth was newly formed. question 20 options: true false
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Why are the ratios not exactly 3:1?...
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