Answer: Increase in the greenhouse effect
Explanation: Green house effect is a phenomenon which takes place in the earths lower atmosphere making it a place to live.
In this process, the infrared radiations emitted by the sun are being trapped by some of the gases which are known as Greenhouse Gases.
These rays emitted from the sun are very harmful and they could cause hazardous diseases if reached to the earths atmosphere.
Greenhouse Gases are Nitrous Oxide, Carbon dioxide, Methane , water vapor and ozone.
Thus if the concentration of any of the gases will increase in the atmosphere, it will lead to the increase in the greenhouse effect.