Question

what is global warming and write it's effects and how can be controlled

Answer 1

the use of automobiles and cutting of trees will emit carbondioxide it will heats up the earth it is called global warming. we can control it by planting trees,using cycle,don't use plastic.

Answer 2

global warming is mostly caused by green house gases, factories , nuclear and thermal power plant etc.
these cause pollution and ozone holes
it can be controlled by using natural energy resources like solar,wind, and water
green house & factory gases should be treated and released into the air