1. Which of the following processes does NOT lead to removal of CO 2 from the at
ID: 290407 • Letter: 1
Question
1.
Which of the following processes does NOT lead to removal of CO2 from the atmosphere?
Cooling oceans
Chemical weathering
Methane hydrates destabilizing
Mountain uplifting
2.
Which feedback did NOT amplify the orbital forcing that starts glacials?
Carbon solubility feedback
Ice-Albedo feedback
Water vapor feedback
Weathering feedback
3.
Which of the following is NOT considered a climate forcing?
Solar insolation changes
Volcanic erruptions
Water vapor feedback
Plate tectonics
4.
Which of these act as feedbacks to amplify orbital forcing and start an ice age?
Surface albedo feedback
Water vapor feedback
CO2-solubility feedback
All of the above
ACooling oceans
BChemical weathering
CMethane hydrates destabilizing
DMountain uplifting
Explanation / Answer
1) Methane hydrates destabilizing does not lead to the removal of Carbon dioxide from atmosphere, while all other more or less contribute in removal, like mountain building may originate new soil through the rock openings which consumes the carbon dioxide from atmosphere, or cooling ocean can absorb more carbon dioxide , as the temperature decreases.Thus the correct option is C.
2)Water vapour feedback doesn't amplify the orbital forcing that starts forming glaciers, because when the temperature increases the amount of water vapour in atmosphere increase, and that doesn't lead to glaciation.Thus the correct option is C.
3)Though water vapour is also a greenhouse gas , but it is not considered as responsible for the climate forcing because the main sources are methane, sulphur dioxide and all that lead to global warming and that causes water to form vapour. Whereas Plate tectonics, solar insolation and volcanic erruption are the major causes of climate forcings. Thus the correct approach is "C".
4) Only Surface Albedo feedback amplify orbital forcing to start ice age, while all other are responsible for the temperature rise. Thus the answer is option "A".
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