Gases, such as…………act like a green house around the earth.
a) CO2
b) CH4
c) both a & b
d) SO2
CO2 and CH4 trap the sun’s rays and cause…
a) global warming
b) acid rain
c) ozone depletion
d) eutrophication
Global warming adversely affects the eliminate changes such as…………
a) rain
b) snowfall
c) both a & b
d) none of these
Global warming increase the…………
a) pressure
b) temperature
c) density
d) gravity
The increase in temperature will ultimately melt the …………
a) ace caps
b) glaciers
c) both a & b
d) none of these
Pollutants also decrease the concentration of ozone below its normal level in……causing ozone depletion.
a) troposphere
b) stratosphere
c) mesosphere
d) thermosphere
