Environmental I...

Ozone layer depletion is caused by

Kyoto protocol is a multination international treaty for

When there is depletion of ozone in the stratosphere the wavelength of radiation striking the earth's surface will be ............

Consider the following statements (A-D) about organic farming
(a) utilizes genetically modified crops like Bt cotton
(b) uses only naturally produced inputs like compost
(c) does not use pesticides and urea
(d) produces vegetables rich in vitamins and minerals.
Which of the given statements are correct?

Which of the following are main responsible for ozone depletion?

Which of the following methods of waste management produce energy?

Snow blindness is caused due to 

Which device is/are used to control $$3-4$$ benzopyrine and benzene from automobile exhaust?
(a) Electrostatic precipitation
(b) Multi point injection engine
(c) Dry scrubber
(d) Catalytic conventer

One major difference between conventional farming practices and organic farming practices is that organic farmers can use 

The pollutant that causes hole in the ozone layer is