Question

how does an increase in atmospheris greenhouse gases increase global temperatures?

a. by decreasing the ozone layer in the atmosphere.

b. by increasing the amount of heat from the sun that reaches the planet surface.

c. by preventing some of the heat from escaping the planet surface.

d. By reacting with each other.

Answer 1

Option - A and C are correct. As greenhouse gases are the main reason for the depletion of the earth's protective layer ozone. The Chlorofluorocarbons and aerosols used in day to day life have created a hole in the ozone thus decrease this protective shield. The carbon dioxide produced by several man-made activities also develops a layer of blanket on the earth's surface thus the heat is not transferred back to the atmosphere and warms the surface leads to develop the greenhouse effect.
Option - B the greenhouse gases do not affect increasing the amount of heat from the sun as they play a role in preventing the escape of heat back to the atmosphere so this is incorrect. In option- D no reaction of greenhouse gases takes place with each other like CO2, methane, CFC, water vapor, N2O so it is also incorrect.