Question # 1

Ozone layer is depleting due to

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Water pollution

Soil pollution

Air pollution

Noise pollution

Nutrients overloads in aquatic ecosystem can cause.

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Death of aquatic life

Algal blooms

Toxicity

Eutrophication

Green house effect keeps the terrestial temperature suitale for life at.

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10 oC

15 oC

20 oC

25 oC

Noise pollution causes.

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Lungs problem

Hapatitis

Weakness of eyesight

High blood pressure

It is a protective gaseous envelop around the Earth.

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Green house effect

Atmosphere

Ozone layer

Oxygen

This pollutant can lead to excess level of acid in lakes and streams, and damages trees and soil

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Carbon di oxide

Methane

Sulphur

Nitrogen

Climate change agreement was signed is.

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Lahore, Pakistan

New York, America

Paris, France

None of these

The unwanted change is physical or chemicla composition of water is refrred to as.

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Air pollution

Land pollution

Water pollution

Noise pollution

It is result of water pollution that leads to death of aquatic life.

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Eutrophication

Toxicity

Mercury

Sulphur

Toxic gases enters the atmosphere due to.

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Noise pollution

Water pollution

Use of chemicla fertilizers

Deforestation

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