Question

Give an example of show how an undesirable change can be prevented

Answer 1

Answer:

* To prevent rusting of iron we can coat it by zinc and also we can paint on the iron surface.

* To prevent oxidation of foods we should add some chemical preservatives in it and we can also pack them in air tight containers.

Hope it helps you!

Answer 2

Answer:

With example we can learn many preventing methods.. To prevent rusting of iron we can coat it by zinc and also we can paint on the iron surface. To prevent oxidation of foods we should add some chemical preservatives in it and we can also pack them in air tight containers.

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