ES Atmosphere 2: Question Preview (ID: 24525)


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Which human activity contributes most to increasing carbon dioxide levels?
a) Respiration b) Biochemical reactions in stomachs c) Burning fossil fuels d) Agriculture
Which greenhouse gas is naturally produced by atmospheric processes?
a) Carbon dioxide b) Nitrous Oxides c) Methane d) Ozone
Which greenhouse gas is produced naturally by respiraton and volcanic outgassing?
a) Carbon dioxide b) Nitrous oxides c) Methane d) Ozone
Which greenhouse gas is not a normal part of the atmosphere?
a) Ozone b) Nitrous oxides c) Methane d) CFC's
Which atmospheric gas varies from 0 to 4 percent?
a) Oxygen b) Nitrogen c) Water vapor d) Carbon dioxide
What percentage of clean dry air is carbon dioxide?
a) 78 percent b) 21 percent c) 0.03 percent d) 0 - 4 percent
What does all the water on Earth form?
a) The hydrosphere b) The atmosphere c) The geosphere d) The biosphere
What do we call the mixture of gases that surrounds the planet?
a) The geosphere b) The hydrosphere c) The biosphere d) The atmosphere
What prevents much of the Sun's energy from reaching Earth's surface?
a) It is blocked by the ozone layer b) It is absorbed, reflected or scattered by the atmosphere c) It is reflected by land or water d) It is blocked by greenhouse gases
How have humans affected the level of CFC's?
a) The contribute 50 percent of CFC's b) They contribute 2 percent of CFC's c) They contribute 85 percent of CFC's d) The contribute 100 percent of CFC's
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