Question

write a short note on global warming​

Answer 1

Answer:

Global warming is a gradual increase in the temperature of the earth surface and atmosphere all around the world. It is caused due to the greenhouse effect of increased level of green house gases such as carbon dioxide, CFCs, etc. A slight increase in the level of CO2 causes marked increase in earth temperature.

Explanation:

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Answer 2

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The heating up of the atmosphere because of the greenhouse gases (carbon dioxide and methane) that trap the heat reflected by the Earth, thereby causing an increase in the Earth’s temperature, is called global warming or greenhouse effect.

Effects of global warming:

(i) It causes a change in the weather and precipitation patterns on the Earth.

(ii) It leads to an increase in methane concentration because of the melting of methane hydrates in polar ice caps and sea floors.

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