the concentration of greenhouse gases in the atmosphere is believed to have increased because of the burning of fossil fuels, the eruption of...

the concentration of greenhouse gases in the atmosphere is believed to have increased because of the burning of fossil fuels, the eruption of volcanoes, and deforestation, among other things. What is an increase in atmospheric greenhouse gases most likely to cause?

A. extreme weather events 

B. a global decrease in the sea level 

C. less severe acid rain 

D. an increase in water pollution