Embibe Experts Solutions for Chapter: Environment : Its Resources and Their Conservation, Exercise 1: West Bengal Board-2019

Speculate the probable causes of each of the following phenomena:

• Insomnia, High blood pressure, partial or complete deafness
• Decrease in the concentration of dissolved oxygen in water and floating of dead fishes
• Dwindling populations of alligators were the result of hunting and loss of habitat,
• Inflammation in the respiratory tract of lung
• Decrease in the number of pollination insects 

Relate the following phenomena with the trend of disturbance in Nitrogen Cycle resulting from different human activities:

• Global Warming
• Acidification of soil and water of river and lake

Hilsa, Bee, Penguin, Rauwolfia -
Assess which are the causes of endangeredness of the above-mention organisms?

 Discuss any two roles of People’s Biodiversity Register (PBR) in conserving local biodiversity?

Tabulate any of the four activities which are prohibited in a sanctuary following the provisions of Wildfire Act?

Evaluate the effects of following pollutants on environment and human health:

• Non-biodegradable insecticides
• Pollen grain
• Chemical fertilizers containing phosphate and nitrate
• Wastes containing pathogens originated from health centres
• Chloroflorocarbon

'The ever-increasing population in the different cities of India is creating the crisis of ground water' Support the statement with reasons on the basis of your experiences. Construct a concept map to show how the increase in human habitat is influencing the ecosystem of Sunderbans.

Summarise which conservation measures have been adopted to increase the population of an endangered mammal exclusively found in the swampy grass lands under the foothills of the Eastern Himalaya. Discuss the role of biodiversity in maintaining the balance of the ecosystem of a river.