If the presence in greenhouse gases in earth's atmosphere continues to increase at the present rate, scientists predict that in the next 50 to 100 years, atmospheric temperatures could rise by 2oc.

all of these could be consequences of global warming except
a) an increase in arid and semi-arid areas on earth.
b) permanent flooding of low-lying coastal wetlands.
c) an increase in square miles of polar ice covering earth.
d) a rise in the amount of vegetation found in tundra and taiga regions.