Common indicator organism of water pollution is:

Gas leaked during Bhopal tragedy was

Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by

Greenhouse effect is caused by

Lichens can be used as :

Increase in the concentration of pollutants in higher trophic levels is known as

Lead is one of the most serious environmental pollutants which affects

lf there was no CO₂ in the atmosphere, the earth's temperature would be

Which of the following pollutants is discharged by jet planes?

SO₂ pollution is indicated by