Q.Write a short note on: Green house effect.

The greenhouse effect is the trapping of the earth's outgoing heat by atmospheric gases like carbon dioxide and methane, which keeps the planet warm. Excess greenhouse gases from human activity intensify it and cause global warming.

This is a 2-mark short note in AP Intermediate 2nd year Economics, part of the environment theme, treated in line with the NCERT/CBSE curriculum.

Meaning. The greenhouse effect is the process by which certain gases present in the earth's atmosphere - known as greenhouse gases, chiefly carbon dioxide, methane, nitrous oxide and water vapour - absorb and trap part of the heat (infrared radiation) that the earth gives off, instead of allowing it to escape into outer space. This trapped heat keeps the earth's surface warm, much as the glass of a greenhouse keeps it warm inside. A moderate, natural greenhouse effect is necessary to make the planet warm enough to support life. However, the burning of fossil fuels, deforestation and industrial activity have greatly increased the concentration of greenhouse gases, int …