Definitions according to freshwater pollution
Frequently used definitions in freshwater pollution theories
|Introduction||Abiotic: nonliving. Compare biotic. |
Acid deposition: the falling of acids and acid-forming compounds from the atmosphere to the earth’s surface. Acid deposition is commonly known as acid rain, a term that refers only to wet deposition of droplets of acids and acid-forming compounds.
Adsorption: adsorption is a surface phenomenon that some products exhibit, whereby they form a physicochemical bond with substances. Not to be confused with absorption.
Biotic: living organisms make up the biotic parts of ecosystems. Compare abiotic.
Chemosynthesis: process in which certain organisms (mostly specialized bacteria) extract inorganic compounds from their environment and convert them into organic nutrient compounds without the presence of sunlight. Compare photosynthesis.
Photosynthesis: complex process that takes place in cells of green plants. Radiant energy from the sun is used to combine carbon dioxide (CO2) and water (H2O) to produce oxygen (O2) and carbohydrates (such as glucose, C6H12C6) and other nutrient molecules. Compare aerobic respiration, chemosynthesis.