EASY
12th Bihar Board
IMPORTANT
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Important Questions on Environmental Issues

MEDIUM
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 23
Which of the following causes ozone hole ?
EASY
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 24
Indicator of water pollution is-
EASY
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 25
Write about the factors and effects of global warming ? How it can be controlled?
MEDIUM
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 26
Secondary pollutant is-
MEDIUM
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 27
‘Chipko movement’ is launched for protection of-
EASY
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 28
Pattern of any population depends on-
HARD
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 29
What is eutrophication ? Explain accelerated eutrophication. Mention any two consequences of this phenomenon.
MEDIUM
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR BIOLOGY>Chapter 16 - Environmental Issues>Bihar Board-2020>Q 30
Which one of the following is major source of air pollution ?