MEDIUM
12th CBSE
IMPORTANT
Earn 100

Name any two sources of e-wastes and write two ways for their disposal.

Important Questions on Environmental Issues

MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 14
What is joint forest management? How can it help in conservation of forest?
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 15
Explain the relationship between CFC's and Ozone in the stratosphere.
HARD
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 16
List the events that reduce the biological oxygen demand (BOD) of a primary effluent during sewage treatment.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 17
List four benefits to human life by eliminating the use of CFC's.
HARD
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 18
Plenty of algal blooms observed in a pond in your locality. Write what has posted this bloom and how does it affect the quality of water.
HARD
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 18
Plenty of algal blooms observed in a pond in your locality. Suggest preventive measures.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 19
How did a citizen group called friends of Areata Marsh, Arcata, California, USA helped to improve the water quality of the marshland using integrated wastewater treatment? Explain in four steps.
MEDIUM
12th CBSE
IMPORTANT
TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 16 - Environmental Issues>TEST QUESTIONS>Q 1
Explain any three measures which will control vehicular air pollution in Indian cities.