Environmental I...

What are the factors responsible for pollution of the river?

Oil spills reduce _________ supplies within the water environment. 

Which of the following describes the destruction of the ozone by chlorofluorocarbons? 

Depletion of ozone layer is mainly due to

_____ shields the surface of the earth from ultraviolet (UV) radiation from the sun.

Which of the following conditions lead to formation of ozone?

40 to 50% depletion in ozone layer occurs in the .......... polar region

Increased level of carbon dioxide in the atmosphere traps the heat rays reflected by the earth causing an increase in the temperature on the earth. This is

The main factor responsible for the depletion of ozone layer is addition of _____in the atmosphere.

.......... is a farming system with minimal or no use of chemicals such as fertilizers, herbicides, pesticides.