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

Lichens indicate pollution by

Major aerosol pollutant present in the jet plane emission is