Write short notes on: 1. Carrying …

The environment is able to perform these functions without any interruption as long as demand on these functions are within its carrying capacity.

Carrying capacity implies two things:

(i) Resource extraction should remain below the rate of resource regeneration.
(ii) Generation of wastes should remain within the absorption capacity of the environment.

If these two conditions are not fulfilled, then environmental crisis occurs.

Global warming is a gradual increase in the average temperature of the earth’s lower atmosphere.
Global warming is caused by man-made increase in carbon dioxide (Co₂) and other greenhouse gases through the burning of fossil fuels and deforestation.

Some of the long term results of global warming are as follow:
(i) Melting of polar ice with a resulting rise in sea level and coastal flooding.
(ii) Extinction of species as ecological niches disappear.
(iii) more frequent tropical storms and
(iv) An increased incidence of tropical diseases.