Drawing fo pollution in future where oxygen could be sold for living
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Hope it helps you as to make your drawing.
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Toxygen which comes from environmebt. Oxygen couldn't be sold for life. We can get oxygen from hospital when we fall ill, when we need more oxygen. Otherwise we get it from nature. So we have to keep our environment clean. If pollution will not on in nature, environment will be clean and fresh. Then we can get easily oxygen from nature. We have to change our environment without pollution.
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