Ammonia-a colorless, pungent, suffocating, highly water-soluble, gaseous compound, NH 3.
Compound-composed of two or more parts, elements, or ingredients: Soap is a compound substance.
Nitrogen-a colorless, odorless, gaseous element that constitutes about four-fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, especially in proteins.
Hydrogen-a colorless, odorless, flammable gas that combines chemically with oxygen to form water
Sulfuric Acid-a clear, colorless to brownish, dense, oily, corrosive, water-miscible liquid, H 2 SO 4 , usually produced from sulfur dioxide.
Ammonium salt-any salt containing the NH 4 + ion, formed by the neutralization of ammonium hydroxide by an acid.
Decade-a period of ten years beginning with a year whose last digit is zero: the decade of the 1980s.
Tarnish-to dull the luster of (a metallic surface), especially by oxidation; discolor.
Mildew-Plant Pathology . a disease of plants, characterized by a cottony, usually whitish coating on the surface of affected parts, caused by any of various fungi.
Chlorine-a halogen element, a heavy, greenish-yellow, incombustible, water-soluble, poisonous gas that is highly irritating to the respiratory organs, obtained chiefly by electrolysis of sodium chloride brine.
Odor-the property of a substance that activates the sense of smell: to have an unpleasant odor.
Environment-the aggregate of surrounding things, conditions, or influences; surroundings; milieu.
Mix-to combine (substances, elements, things, etc.) into one mass, collection, or assemblage, generally with a thorough blending of the constituents.
Contribute-to give (money, time, knowledge, assistance, etc.) to a common supply, fund, etc., as for charitable purposes.
Global Warming-an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect.
OzoneLayer- . the layer of the upper atmosphere where most atmospheric ozone is concentrated, fromabout 8 to 30 miles (12 to 48 km) above the earth, with the maximum ozone concentration occurring at analtitude of about 12 miles (19 km)
River-a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels.
Algae-any of numerous groups of chlorophyll-containing, mainly aquatic eukaryotic organisms ranging from microscopic single-celled forms to multi-cellular forms 100 feet (30 meters) or more long, distinguished from plants by the absence of true roots, stems, and leaves and by a lack of non-reproductive cells in there productive structures.
Oxygen-a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature.
Organism-a form of life considered as an entity; an animal, plant, fungus, protistan, or moneran.
Fritz Haber- a German chemist who invented ammonia.
Atmosphere-the gaseous envelope surrounding the earth; the air.
Vast-of very great area or extent; immense: the vast reaches of outer space.
Reservoir-a natural or artificial place where water is collected and stored for use, especially water for supplying a community , irrigating land, furnishing power, etc.