A. Mercury

B. Lead

C. Methyl iso cyanate

D. None

A. Leaf blights

B. Opening of stomata

C. Closure of stomata

D. None

A. Polluted fuel

B. Clean fuel

C. Harmful fuel

D. None

A. Lichen

B. Bryophyte

C. Pteridophyte

D. None

A. Ecological disturbance

B. Pollution 

C. Catastrophe

D. None of the above

A. Plastic

B. Cans

C. Dead Animals

D. Glass

A. Plants

B. Animals

C. Vehicles

D. Snakes

A. Dead Animals

B. Plastic

C. Dead Plants

D. All of the above

A. Burning fuels 

B. Cutting forests

C. Use of fertilization

D. None of the above

A. Animals

B. People

C. Trees

D. Birds