“Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH. It is a colourless...Ammonia
“The Bronze Age is a time period characterized by the use of copper and its alloy bronze and...Bronze Age
“Renewable energy is energy that comes from resources which are continually replenished such as...Renewable energy
“The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom...United Kingdom
“The U.S. Environmental Protection Agency (EPA or sometimes USEPA) is an agency of the federal...Environmental Protection Agency
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