1 Which activity directly contributes the most to recent increases in atmospheric CO concentrations A Landfills B Planting trees

Question

1 Which activity directly contributes the most to recent increases in atmospheric CO concentrations A Landfills B Planting trees C Cattle rearing D Burning of fossil fuels 2 What is a potential consequence of the rise in global temperatures A Increased exposure to UV light due to ozone depletion B Increase in ocean pH threatening the survival of marine organisms that require calcium carbonate C Decrease in the number and severity of storms due to the increased evaporation D Changes to circulating ocean currents 3 How do greenhouse gases contribute to global warming A They destroy the ozone layer allowing radiation to reach the Earth s surface B They prevent radiation from the Earth escaping into space C They trap short wavelength radiation in the atmosphere Name D They are a product of combustion which generates heat ab to colpo 4 Which gases have made the most significant contributions to global warming A Water and carbon dioxide B Carbon dioxide and methane C Methane and nitrous oxide D Carbon dioxide and ozone

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