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Atmospheric
CO2 concentrations began their most recent steep increase about:
a.
5000 B.C.
b.
1000 B.C.
c.
1400 A.D.
d.
1800 A.D.
e.
1950 A.D.
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- The main cause of the increase in the amount of CO2 in Earth’satmosphere over the past 150 years is(A) increased worldwide primary production.(B) increased worldwide standing crop.(C) an increase in the amount of infrared radiation absorbedby the atmosphere.(D) the burning of larger amounts of wood and fossil fuelsWhich of the following natural forces is responsible for the release of carbon dioxide and other atmospheric gases? a. the Milankovitch cycles b. volcanoes c. solar intensity d. burning of fossil fuelsIncreased average water temperature in Lake Erie as a result ofclimate change would most likely have what effect?a. decreased harmful algal blooms, as the higher temperatures wouldquickly kill most algae b. decreased fish populations as a result of eutrophicationc. longer algal blooms due to longer periods of warm waterd. b and ce. a, b, and c
- Which of the following statements about the carbon dioxide emitted to the atmosphere by human activities each year is most accurate? a. About half of it remains in the atmosphere and the other half is split equally between uptake by the oceans and vegetation. b. Nearly all of it remains in the atmosphere. c. About half of it dissolves in the oceans. d. On an annual basis, human-caused emissions of carbon dioxide are small compared to volcanic emissions. e. Human-caused emission of carbon dioxide is much greater than that emitted by respiration of all plants, animals, and microorganisms.About how much mercury was emitted by fossil fuel combustion in Asia? A.)340 tons B.)0 tons C.)40 tons D.)525 tonsThe recent increase in atmospheric CO2 concentration is mainly a result of an increase in a. plant growth. b. the absorption of heat radiating from Earth. c. the burning of fossil fuels and wood. d. cellular respiration by the increasing human population.
- Which region emitted the greatest amount of total mercury? A.)Asia B.)South and Central America C.)North America D.)Middle EastAs greenhouse gas levels in the atmosphere decrease, global temperatures __________________________. a. increase b. stay the same c. decrease d. there is no correlationThe numbers of the bottom of the chart represents the number of years. What do you think is/are the reasons on the rise and decline of oxygen levels on earth as years go by?
- Areas approximately thirty (30) degrees north and south of the equator are home to many of the world’s deserts. What happens at these latitudes to cause deserts to form? Group of answer choices a. moist air falls from the upper atmosphere b. mountains block air from the ocean c. dry air rises into the upper atmosphere d. dry air falls from the upper atmosphere e. moist air rises into the upper atmosphereWhich of the following is true of greenhouse gases in our atmosphere? Group of answer choices A. They include carbon dioxide, methane, and water vapor. B. They are responsible for the majority of back radiation to the Earth’s surface. C. Without these gases, the Earth’s surface would be considerably cooler (by more than 30OC). D. A and B E. A, B, and CWhat gas is a human-made pollutant in the lower (surface) atmosphere but a natural and beneficial gas in the stratosphere? (a) CO2 (b) CH4 (c) O3 (d) CFCs (e) N O