“1. When purchasing a new car, consider one that is the most efficient, lowest-polluting vehicle...How to Reduce Air Pollution
“Land pollution is the degradation of Earth's land surfaces often caused by human activities and...Land Pollution
“Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH3. It is a colourless...Ammonia
“Livermorium is the synthetic superheavy element with the symbol Lv and atomic number 116. The...Livermorium
“Silicon, a tetravalent metalloid, is a chemical element with the symbol Si and atomic number 14...Silicon
“Sulfur or sulphur (British English; see spelling below) is a chemical element with symbol S and...Sulfur
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