Page 138 - Genius Kidz Prudence Learning Sc-8

comprises of any liquid or solid matter (a) In the case of human beings, SPM can
dispersed in air. SPM includes aerosol, dust, enter the lungs and can cause lung
fumes, moisture, smoke and fly ash. cancer, asthma etc.

Sources of SPM include burning of wood, (b) In the case of materials, SPM can form a
coal, industries, volcanoes, etc. smoky layer on them and can even
Effects : corrode the materials if they are

Activity 1
Think about it :”Normal rain is also acidic”. Why??

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Activity 2

Write a brief note on “Greenhouse gases”.
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