Q10 of 15 Page 173

Clear and transparent water is always suitable for drinking. Comment.

Clear and transparent water is not always suitable for drinking


Reason: It may seem clear and clean. But it may contain some small microbes and bacteria that are harmful to us. It can also contain traces of lead and mercury which are major causes of cancer in humans.


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8

Organize a field visit to a pond/lake / river present in or near to your village with the

the help of your teachers.


Observations followed by discussion could focus on... The history of the pond or lake or river, Water resources available other than that river/ pond/ or lake, Cultural traditions, Pollution concerns, Source of pollution, Effects of pollution on the people living by the river side as well as those living far away.

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What is air pollution? Make a flowchart to describe its causes and effects.

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If our monument like Taj Mahal is effected by air pollution, what is your advice to protect it?

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Reshma going to talk about controlling measures of soil pollution. Prepare a write up

for her.