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What are the negative effects of using chemicals?

What are the negative effects of using chemicals? Chemicals are used for different experiments in chemistry. But they can be harmful to humans and the environment when they are not properly used. i) Chemicals are used to keep fish and meat fresh and ripen fruits which is harmful to health. ii) Preservatives are used to preserve different food products which are risky for health. iii) Excessive use of chemical fertilizer harms plants. iv) Different harmful substances enter our bodies through blood by using artificial cosmetics, colors, etc. You may like What is Electrocardiograph? What is biological currency? What is activation energy? What is rate of reaction? What is green chemistry?

Write simple instructions on 'Washing clothes'.

Write simple instructions on 'Washing clothes'.

Dirty clothes are washed through a number of stages. At first, soap pieces or soap powder are mixed with clean water. Then dirty clothes are dipped in the mixture. It is left for 30 - 40 minutes. Next, it is scrubbed and rinsed. After that, it is dried in the sun. Then it is pressed or ironed. Now it is made ready for wear. Thus, we see washing clothes is not very difficult and we can make it ourselves.

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