How are atmospheric CO2 levels affected by the presence of land plants?
What will be an ideal response?
Vascular plants increase the partial pressure of CO2 in soils, allowing for faster weathering rates. This should lead to a speed-up of the drawdown of CO2 through carbonate deposition, and CO2 levels should subsequently decrease.
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After aerobic waste decomposition in a landfill has stopped,
A. anaerobic decomposition produces different gases, including methane. B. methane production also ceases in the absence of oxygen. C. no further breakdown of wastes occurs. D. further leachate is harmless.
Some types of bacteria are extremely important in changing atmospheric nitrogen into a form of ____
A)oxygen that is released into the atmosphere B)carbon dioxide that speeds decomposition C)carbon dioxide that aids in plant growth D)soil nitrogen suitable for use by plants E)nitroglycerine for uptake by plant roots
Sandy soils have a high infiltration capacity
Indicate whether the statement is true or false.
Imported songs are more prominent in which part of North America when it comes to folk tunes?
A. United States B. Canada C. Greenland D. Mexico