Answers

2016-02-02T17:59:42+05:30
Bcoz they are limited and non renewable .
Conservation :
By using scrap iron ………… see oswaal question bank detailed answer .
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2016-02-02T21:38:29+05:30
Conservation of minerals is essential becoz it is very limited and a non renewable resources.it should be conserved for future generation ro sustain thier needsand wants to make or produce materials anduse in thier ownpurposes or for others.india is rich in its mineral but found in very few places.minerals are indepensable part of our life .Almost everything we use from tallest tower to  a tiny pin.we cannot live without minerals.there are measures to vconserve our minerals. 
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