Global warming is basically the result of

Anthropogenic activities such as deforestation and industrialisation.

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Ozone layer depletion

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Naturally occurring greenhouse gases in the earth’s atmosphere

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None of these

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Solution

The correct option is A Anthropogenic activities such as deforestation and industrialisation.
Global warming is an increase in the average surface temperature of the earth. This happens when there is an increase in the amounts of greenhouse gases in the atmosphere, beyond normal levels, upsetting the natural greenhouse effect. Such an increase is mostly the result of human activities such as burning fossil fuels, deforestation, careless disposal of various kinds of wastes etc.

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Similar questions

Assertion :Presently, the global atmosphere is warming up.

Reason :The depletion of stratospheric ozone layer has resulted in increase in ultraviolet radiations reaching the earth.

We are living in the midst of a great chemical experiment, and some serious consequences are becoming apparent to scientists. More than two billion pounds of chemicals are spewed into the air each year, which are brewing a disastrous stew. The greatest consequences of the atmosphere crisis may be global warming and ozone depletion. The Earth appears to be warming due to the greenhouse effect. Scientists estimate that average temperature could climb about 20C in 20 years.Global warming is the predicted result of the greenhouse effect, created by the greenhouse gasses, such as carbon dioxide and methane, in the atmosphere. This change in the global climate would have disastrous results including drought, coastal flooding and increased species extinction. Also, the scientists have discovered a hole in the ozone layer. The ozone layer is the only protection for life on Earth against deadly ultraviolet radiation from the Sun. Once the ozone layer is completely destroyed, all life on the Earth will cease to exist, killed by the deadly radiation. The planet will become a barren rock devoid of all life. And when this happens the process of industrialisation would have to take the blame, which has resulted in increased use of fossil fuels such as coal, petroleum and diesel.

Q. Which of the following can be inferred from the given passage?

Q. Assertion: Global warming is resulting in ozone layer depletion.

Reason: UV rays cause photodissociation of ozone to oxygen.

Question 16
Which of the following is a recently originated problem of environment?

(a) Ozone layer depletion
(b) Greenhouse effect
(c) Global warming
(d) All of the above

Q. Assertion :Deforestation is one main factor contributing to global warming. Reason: Besides

C O_{2}

, two other gases methane and CFCs are also included under greenhouse gases.

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