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37 Cards in this Set

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ACID DEPOSITION
RAIN, SNOW, SLEET, HAIL, OR DRIZZLE CONTAINING ACIDIC OXIDES OF SULFUR, NITROGEN, ETC. THAT ARE RELEASED INTO THE ATMOSPHERE, USUALLY FROM THE COMBUSTION OF FOSSIL FUELS, AND RETURN TO EARTH DISSOLVED IN PRECIPITATION
COLIFORMS
AEROBIC OR FACULTATIVELY ANAEROBIC, GRAM-NEGATIVE, NONENDOSPORE-FORMING, ROD-SHAPED BACTERIA THAT FERMENT LACTOSE WITH ACID AND GAS FORMATION WITHIN 48 HOURS AT 35 DEGREES C
EUTROPHICATION
THE ADDITION OF ORGANIC MATTER AND SUBSEQUENT REMOVAL OF OXYGEN FROM A BODY OF WATER
PROFUNDAL ZONE
THE DEEPER WATER UNDER THE LIMNETIC ZONE IN AN INLAND BODY OF WATER
ROOT NODULE
A TUMORLIKE GROWTH ON THE ROOTS OF CERTAIN PLANTS CONTAINING SYMBIOTIC NITROGEN-FIXING BACTERIA
PHOSPHOROUS CYCLE
THE VARIOUS SOLUBILITY STAGES OF PHOSPHORUS IN THE ENVIRONMENT
FLOCCULATION
THE REMOVAL OF COLLOIDAL MATERIAL DURING WATER PURIFICATION BY ADDING A CHEMICAL THAT CAUSES COLLOIDAL PARTICLES TO COALESCE
COMPOSTING
A METHOD OF SOLID WASTE DISPOSAL, USUALLY PLANT MATERIAL, BY ENCOURAGING ITS DECOMPOSITION BY MICROBES
INDICATOR ORGANISM
A MICROORGANISM, SUCH AS A COLIFORM, WHOSE PRESENCE INDICATES CONDITIONS SUCH AS FECAL CONTAMINATION OF FOOD OR WATER
LITTORAL ZONE
THE REGION ALONG THE SHORE OF THE OCEAN OR A LARGE LAKE WHERE THERE IS CONSIDERABLE VEGETATION AND WHERE LIGHT PENETRATES TO THE BOTTOM
BIOLUMINESCENCE
THE EMISSION OF LIGHT FROM THE ELECTRON TRANSPORT CHAIN; REQUIRES THE ENZYME LUCIFERASE
ACTIVATED SLUDGE SYSTEM
A PROCESS USED IN SECONDARY SEWAGE TREATMENT IN WHICH BATCHES OF SEWAGE ARE HELD IN HIGHLY AERATED TANKS; TO ENSURE THE PRESENCE OF MICROBES EFFICIENT IN DEGRADING SEWAGE, EACH BATCH IS INOCULATED WITH PORTIONS OF SLUDGE FROM A PREVIOUS BATCH
AMMONIFICATION
THE RELEASE OF AMMONIA FROM NITROGEN CONTAINING ORGANIC MATTER BY THE ACTION OF MICROORGANISMS
BENTHIC ZONE
THE SEDIMENT AT THE BOTTOM OF A BODY OF WATER
BIOAUGMENTATION
THE USE OF POLLUTANT-ACCLIMATED MICROBES OR GENETICALLY ENGINEERED MICROBES FOR BIOREMEDIATION
TRICKLING FILTER
A METHOD OF SECONDARY SEWAGE TREATMENT IN WHICH SEWAGE IS SPRAYED OUT OF ROTATING ARMS ONTO A BED OF ROCKS OR SIMILAR MATERIALS, EXPOSING THE SEWAGE TO HIGHLY AEROBIC CONDITIONS AND MICROORGANISMS
SECONDARY SEWAGE TREATMENT
BIOLOGICAL DEGRADATION OF THE ORGANIC MATTER IN WASTEWATER FOLLOWING PRIMARY TREATMENT
BIOCHEMICAL OXYGEN DEMAND (BOD)
A MEASURE OF THE BIOLOGICALLY DEGRADABLE ORGANIC MATTER IN WATER
SLUDGE
SOLID MATTER OBTAINED FROM SEWAGE
AQUATIC MICROBIOLOGY
THE STUDY OF MICROORGANISMS AND THEIR ACTIVITIES IN NATURAL WATERS
LIMNETIC ZONE
THE SURFACE ZONE OF AN INLAND BODY OF WATER AWAY FROM THE SHORE
NITROGEN CYCLE
THE SERIES OF PROCESSES THAT CONVERTS NITROGEN (N2) TO ORGANIC SUBSTANCES AND BACK TO NITROGEN IN NATURE
BULKING
A CONDITION ARISING WHEN SLUDGE FLOATS RATHER THAN SETTLES IN SECONDARY SEWAGE TREATMENT
PRIMARY SEWAGE TREATMENT
THE REMOVAL OF SOLIDS FROM SEWAGE BY ALLOWING THEM TO SETTLE OUT AND BE HELD TEMPORARILY IN TANKS OR PONDS
ENDOLITH
AN ORGANISM THAT LIVES INSIDE ROCK
ARBUSCULE
FUNGAL MYCELIA IN PLANT ROOT CELLS
OXIDATION POND
A METHOD OF SECONDARY SEWAGE TREATMENT BY MICROBIAL ACTIVITY IN A SHALLOW STANDING POND OF WATER
BIOFILM
A MICROBIAL COMMUNITY THAT USUALLY FORMS AS A SLIMY LAYER ON A SURFACE
BIOGEOCHEMICAL CYCLE
THE RECYCLING OF CHEMICAL ELEMENTS BY MICROORGANISMS FOR USE BY OTHER ORGANISMS
ANAEROBIC SLUDGE DIGESTER
ANAEROBIC DIGESTION USED IN SECONDARY SEWAGE TREATMENT
DENITRIFICATION
THE REDUCTION OF NITRATES TO NITRITES OR NITROGEN GAS
SULFUR CYCLE
THE VARIOUS OXIDATION AND REDUCTION STAGES OF SULFUR IN THE ENVIRONMENT, MOSTLY DUE TO THE ACTION OF MICROORGANISMS
TERTIARY SEWAGE TREATMENT
A METHOD OF WASTE TREATMENT THAT FOLLOWS CONVENTIONAL SECONDARY SEWAGE TREATMENT; NONBIODEGRADABLE POLLUTANTS AND MINERAL NUTRIENTS ARE REMOVED, USUALLY BY CHEMICAL OR PHYSICAL MEANS
GLOBAL WARMING
RETENTION OF SOLAR HEAT BY GASES IN THE ATMOSPHERE
CARBON CYCLE
THE SERIES OF PROCESSES THAT CONVERTS CO2 TO ORGANIC SUBSTANCES AND BACK TO CO2 IN NATURE
ROTATING BIOLOGICAL CONTACTOR
A METHOD OF SECONDARY SEWAGE TREATMENT IN WHICH LARGE DISKS ARE ROTATED WHILE PARTIALLY SUBMERGED IN A SEWAGE TANK EXPOSING SEWAGE TO MICROORGANISMS AND AEROBIC CONDITIONS
PHYTOPLANKTON
FREE-FLOATING PHOTOAUTOTROPHS