Water Quality and Environmental Requirements Crossword Puzzle

QUESTIONS LIST: secchi disk : water turbidity in fish ponds is commonly measured using this instrument, physical filtration : it is one of the various methods of water treatment used in catfish farming in which it involves the use of mechanical filters to remove solid particles from the water, thermal stratification : it refers to the separation of water into distinct layers, warm : _ -water species prefer waters above 20°c (68°f), contaminants : in catfish, proper water treatment is necessary to remove impurities and _ from the water and to maintain optimal water quality, stocking : _ density affects growth, survival, and overall production of species, euryhaline: species that can tolerate a wide range of salinity, color : it is a result of the interaction of incident light and impurities in the water, turbidity: it is a measure of light penetration in water,, moderate : areas best suited for shrimp farming should have _ tidal fluctuations, preferably 2–3 meters, turbid: mud crabs often live in areas of _ coastal waters, total alkalinity : _ is defined as the total amount 'of titratable bases in water expressed as mg/l of equivalent calcium carbonate, gills : aquatic animals extract oxygen through _ , where oxygen diffuses into the blood or hemolymph and is carried away by pigment molecules like hemoglobin, temperature : water _ is the environmental parameter that significantly affects fish, ph : the _ of water expresses the intensity of its acidic or basic character, salinity: it measures the concentration of dissolved ions in water, acclimatization : it is the process by which fish physiology is slowly altered so that it can adapt to environmental changes, groundwater : it accounts for approximately 97% of the earth's unfrozen freshwater.