Question

bird population in india is going down at an alarming rate especially of the sparrow which were visible in all cities and towns until a few years ago they have now become a rare sight what do you think are the reasons for this

Answer 1

Answer:

Explanation:

The decline in sparrow population was first recorded during the British Industrial Revolution, as the grime and soot started polluting the atmosphere. Then their population started reducing in other European powerhouses.

But the biggest blow to them was during the reign of Chairman Mao, Chinese premier, who launched the four pest campaign in which millions of sparrows were killed. Consequent drought killed nearly 20 million people. Even the Chinese realized that sparrows contributed to the balance of the ecosystem but the damage they had done was irreversible.