Essential for life filling the blanks first a fire cannot be lighted if there one...2. The the air becomes ....as we go......3.Contqminnation of atmosphere causes ......pollution.4 ......impurities are left Behind after evaporation.5....... water is widely used in injection and medicines.6...... Travels through air.
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Answer:1-oxygen 2-cooler 3-air 4-water 5-pure 6- we
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Answer:
1 oxygen 2?? 3 Air 4 evaporating dish 5 Distilled 6 ?
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