Final answer:
Large-scale deforestation leads to increased atmospheric carbon by reducing the number of carbon-absorbing trees and releasing stored carbon when trees are burned or decompose. This, combined with the significant carbon emissions from the burning of fossil fuels, exacerbates climate change and disrupts the carbon cycle.
Step-by-step explanation:
The effect of large-scale deforestation on the carbon in the atmosphere is significant and detrimental. As deforestation occurs, the number of trees capable of absorbing carbon dioxide decreases, leading to higher concentrations of this greenhouse gas in the atmosphere. Moreover, when the biomass from deforestation is burned or decomposes, the carbon stored within is released back into the atmosphere, further exacerbating the issue.
The burning of fossil fuels, such as coal, oil, and natural gas, which are rich in carbon content, contributes substantially to atmospheric carbon. This additional release of carbon dioxide, combined with the reduction in carbon sequestration due to deforestation, significantly affects Earth's climate and temperature regulation, leading to global climate change.
With human activity altering the carbon cycle, and rising levels of greenhouse gases, there is a pressing need for a shift towards alternative energy sources and the conservation of forests, which act as carbon sinks, to mitigate the effects of climate change.