Greenhouse effect is caused by
|
Answer
|
Lichens can be used as :
|
Answer
|
Increase in the concentration of pollutants in higher trophic levels is known as
|
Answer
|
Lead is one of the most serious environmental pollutants which affects
|
Answer
|
lf there was no CO2 in the atmosphere, the earth's temperature would be
|
Answer
|
Which of the following pollutants is discharged by jet planes?
|
Answer
|
SO2 pollution is indicated by
|
Answer
|
Lichens indicate pollution by
|
Answer
|
Major aerosol pollutant present in the jet plane emission is
|
Answer
|
Which of the following shows biological amplification?
|
Answer
|