What is one negative effect of human influence on cycles of matter?   a.decreased soil nitrogen due to the harvesting of crops b.decreased amount of carbon in the atmosphere due to deforestation c. reased global warming due to the use of alternative energy sources d. reased amount of water that is available to freshwater ecosystems

Increased global warming due to the use of alternative energy sources (c)

Explanation:

the choices that we make impact the environment. Due deforestation there are less number of tress which results in less amount of oxygen being released in the atmosphere hence more carbon dioxide in the environment contributes to the climate change.

Carbon dioxide is the principal greenhouse gas that insulates the earth so more Carbon dioxide means a warmer earth.The burning of coal, oil and gas also contributes to global warming.The use of chlorofluorocarbons (CFC's) is a major cause too