Air Pollution

فضائي آلودگي

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Effects of Human Activities on Environment

ماحول تي انساني سرگرمين جا اثر

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Acid Rain

تيزاب واري برسات

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Greenhouse Effect

ساوڪ گهر وارو اثر

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Ozone Layer Depletion

اوزون تھہ ۾ سوراخ

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Deforestation

ٻيلن جي وڍائي

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Save the Earth

زمين جو تحفظ

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Chapter Summary

باب جو تت

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Review Questions

دور جا سوال

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