1) Which of the following is true of carbon dioxide concentrations in North Amer
ID: 231279 • Letter: 1
Question
1) Which of the following is true of carbon dioxide concentrations in North America
a) There is no discernible pattern of concentration, b) Concentrations fall from autumn through spring, c) Concentrations levels are constant through the year, d) Concentrations increase from spring through autumn, e) Concentrations fall from spring through autumn.
2) Which of the following types of vegetation is most likely to be found in Costa Rica?
a) Tropical forest, b) Coniferous forest, c) Tropical Savanna, d) Tundra, e) Desert.
3) Which of the following is not one of the soil forming factors?
a) biological activity b) time c) topography d) season of year e) climate
4) If a substance accumulates in an animal rather than being broken down, then at each trophic level the concentration of that pesticide increases in a process called
a) eutrophication, b) biomagnification, c) web disruptors, d) bioabsorption, e) biodeabsorption,
5) Deer and lions are good examples of .
a) bioaccumulators b) consumers c) biomagnifiers d)producers e) decomposers
6) In the food chain, green plants are examples of .
a) biomagnifiers, b) producers, c) consumers, d) bioaccummulators, e)decomposers.
7) The addition of large amounts of bioavailable nitrogen and phosphorus to our streams, lakes, and coastal areas,is responsible for which of the following?
a) lake and stream magnetization, b) lake and stream eutrophication, c) lake size increases d) reduction in water levels e) increase in breast and prostate cancer in humans
8) Although many processes are involved, clearly combustion of fossil fuels is the most important factor driving the global increase in atmospheric and thus global warming.
a) oxygen, b) CFCs, c) ozone, d) CO2, e)nitrates
9) When forests are cut down, most of this in the trees is released to the atmosphere, through decomposition or perhaps fire.
a) nitrogen, b) oxygen, c) neon, d)sulfur, e) carbon
10) Generally, evapotranspiration depends on two factors. These are:
a) Transpiration must not be present and evaporation must be determined to be below 10 percent. b) Water must be available for plants to transpire and the air cannot be saturated with humidity. c) Water must be available for plants to transpire and the air must be saturated with moisture. d) The roots must be able to provide water through osmosis and the air must be saturated. e) Evaporation must be zero and the air must be saturated.
8) Although many processes are involved, clearly combustion of fossil fuels is the most important factor driving the global increase in atmospheric and thus global warming.
Explanation / Answer
Answers:
1 a) There is no discernible pattern of concentration.
2. a) Tropical Forest
3. d) Season of the year
4. b) Biomagnification
5. a) Bioaccumulators
6. b) Producers
7. b) Lake and stream eutrophication
8. d) CO2
9. e) Carbon
10. c) Water must be available for plants to transpire and the air must be saturated with moisture.
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