Class 11th Eng.Core Hornbill Ch-5 CBSE NCERT , Solved Question answer Theme Message Characters
Ch-5 The AILING PLANET, THE GREEN MOVEMENT BY Nani Palkhiwala Questions and answers Q1. What does the notice The world's most dangerous animal' at a cage in the zoo at Lusaka, Zambia signify? Ans. Human beings are the most dangerous to the environment. They cause the most destruction to the environment. Human beings are the most dangers species as they exploit the natural resources beyond reasonable limits. Q2. How are the earth's principal biological systems being depleted? Ans. Four principal biological systems of the earth are: (a) Fisheries-Their productivity is impaired. Over fishing is common. (b) Forests are decimated for firewood, several species of animals extinction. Forty to fifty million acres of forests are being eroded every year. We are losing one and a half acre of forests per second. (c) Grasslands and croplands too are being depleted. (d) Croplands are overused and over exploited. These are being destro...