The Carbon Cycle NASA
Effects of Changing the Carbon Cycle. All of this extra carbon needs to go somewhere. So far land plants and the ocean have taken up about 55 percent of the extra carbon people have put into the atmosphere while about 45 percent has stayed in the atmosphere.
Explain how human activity can affect the carbon cycle
Human activity can affect the amount of carbon in the atmosphere. When fossil fuels like oil coal and natural gas are burned carbon dioxide is released into the atmosphere as waste. The clearcutting of forests for lumber and fuel also increases levels of carbon dioxide in the atmosphere because the trees can no longer remove carbon dioxide
Human Impacts on the Carbon and Nitrogen Cycles Chapter 9
Abstract. Human activities are substantially modifying the global carbon and nitrogen cycles. The global carbon cycle is being modified principally by the burning of fossil fuels and also by deforestation these activities are increasing the carbon dioxide concentration of the atmosphere and changing global climate.