Question

environmental(_________) is one of the most serious problem we are facing today​

Answer 1

Explanation:

Climate change is the big environmental problem that humanity will face over the next decade, but it isn't the only one. We'll take a look at some of them — from water shortages and loss of biodiversity to waste management — and discuss the challenges we have ahead of us.

Answer 2

The answer is

degradation

Hope this will help you