Chemistry at work. Every facet of our existence -- living or non-Living -- is a completed or ongoing chemical process.

More than one hundred elements (basic units of chemical compounds) have been identified thus far: most are stable, others are reactive and dangerous. The ones with the highest atomic numbers (total number of protons or electrons in the atoms) are created in laboratories and have brief existences. About twenty are radioactive -- and the harm their intrinsic energies can wreak was in evidence in Hiroshima and Nagasaki towards the end of Word War II (Hachiya, 1945).

Yet, most elements are the bases of food, shelter and clothing -- the basic necessities of life. The air we breathe is a cocktail composed of approximately 78% nitrogen gas, 20% oxygen gas, carbon dioxide and other gases in trace amounts (Aquatext, 2000). Upsetting this critical balance causes adverse effects such as global warming...
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