Now since 2011 when this topic was specifically mentioned the number of questions that are, they can be allocated to this particular topic is actually very HIGH. In 2014 as many as 18 to 20 questions were there from this section only. The reason for this is very simple, Indian Forest Services examination prelims process was introduced in that examination and the prelims process is basically merged with the CIVIL Services examination. So, when you appear for the Civil Services examination some of you also appear for the Indian Forest Services prelims examination.

Now, since the paper is same the weight of Environmental Ecology topic has gone up and that is why this has became an important portion of the paper. We can basically see that in 2015 the number of questions were around 11 to 12 but from this small topic/chapter is actually very significant. So, now we will try to identify that How and Why you should STUDY Environment & Ecology so as to cover most of the things that you want to do for scoring 80 to 90 percent marks in the questions from these sections.

hope it works friend