1.Which of the following would act as a negative feedback loop? Select one: a. I
ID: 279422 • Letter: 1
Question
1.Which of the following would act as a negative feedback loop?
Select one:
a. Increased evaporation of water, which results in more clouds.
b. Higher temperatures, which increase release of dissolved carbon dioxide from the oceans.
c. Increased absorption of carbon dioxide by the oceans, which results in ocean acidification.
d. Melting of polar ice, which alters ocean circulation patterns.
2.The sawtooth pattern of increasing and decreasing carbon dioxide concentrations observed by Charles Keeling at Mauna Loa Observatory was a result of:
Select one:
a. increased burning of fossil fuels during the winter in the northern hemisphere.
b. seasonal changes in photosynthesis and respiration, particularly in northern hemisphere ecosystems.
c. the Kyoto Treaty and other global efforts to limit carbon dioxide emissions.
d. errors caused by monitoring instruments.
Explanation / Answer
Answer 1. Option c
Increase in CO2 concentration leads to its absorption by the ocean water, that leads to the formation of carbonic acid.
Answer 2. Option a
Burning of fossil fuels leads to the production of CO2 that in turn leads to the global warming.
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