MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100

What is greenhouse effect? What are its consequences?

Important Questions on Environmental Issues

MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 9
How is ozone depleted in the atmosphere?
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 10
Mention three causes of deforestation.
HARD
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 1
Classify the pollutants by the help of a chart.
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 2
Discuss an ecosystem with special reference to its dynamic nature.
HARD
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 3
Give an account of pollutants of air pollution.
MEDIUM
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 4
How is water polluted? Discuss the harmful effects of water pollution.
HARD
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 5
Discuss the greenhouse effect on the biological system.
EASY
12th West Bengal Board
IMPORTANT
A TEXT BOOK OF BIOLOGY CLASS 12>Chapter 16 - Environmental Issues>EXERCISE>Q 6
Write about the photochemical products and their pathological effects.