The correct option is A a(iii) ., b(iv) ., c(i )., d( ii )
Eutrophication - excessive richness of nutrients in a lake or other body of water, frequently due to run-off from the land, which causes a dense growth of plant life.
Sanitary landfill - are sites where waste is isolated from the environment until it is safe. It is considered when it has completely degraded biologically, chemically and physically.
Snow blindness - is a painful eye condition caused by overexposure to ultraviolet (UV) light. When too much UV light hits the transparent outer layer of your eyes, called the cornea, it essentially gives your cornea a sunburn.
Jhum cultivation - to practice shifting agriculture (jhum), whereby land is cleared by burning the vegetation, is cultivated for several years, and then is abandoned in favour of another site when the productivity of the soil declines.