H Biolagy Polloution

Front 1

aquifer

Back 1

Rock layers that contain water and will release it in appreciable quantites to wells or springs.

Front 2

benthic division

Back 2

Ocean or lake floor from the high-tide mark to the deepest depths; which supports a unique set of organisms.

Front 3

biological magnification

Back 3

Process by which substances become more concentrated in organisms in the higher trophic levels of a food web.

Front 4

epiphyte

Back 4

Plant that takes its nourishment from the air because its placement in other plants gives it an aerial position.

Front 5

denitrification

Back 5

Conversion of nitrate or nitrite into nitrogen gas by bacteria in soil.

Front 6

detritivore

Back 6

Organism that feeds on freshly desd or partially decomposed organic matter.

Front 7

Estuary

Back 7

Protion of ocean located where a river enters fresh water and mixs with salt water.

Front 8

eutrophication

Back 8

Enrichment of water by inorganic nutrients used by phytoplankton; often overenrichment is caused by human activites leading to excessive bacterial growth and oxygen depletion.

Front 9

littoral zone

Back 9

Shore zone between high tide mark and low tide mark; also shallow water of a lake where light penetrates to the bottom.

Front 10

nitrification

Back 10

Process by which nitrogen in ammonia and organic compounds is oxidized to nitrites and nitrates by soil bacteria.

Front 11

nitrogen fixation

Back 11

Process whereby free atmospheric nitrogen is converted into compounds, such as ammonium and nitrates, usually by bacteria.

Front 12

pelagic division

Back 12

Open portion of the sea.

Front 13

photochemical smog

Back 13

Air pollution that contains nitrogen oxides and hydrocarbons which react to produce ozone and PAN.

Front 14

phytoplankton

Back 14

Part of plankton containing organisms that photosynthesize releasing oxygen to the atmosphere and serving as food producers in aquatic ecosystems.

Front 15

fall overturn

Back 15

Mixing process that occurs in fall in stratified lakes whereby the oxygenrich top waters mix with nutrient rich bottom waters

Front 16

greenhouse effect

Back 16

Reradiation of solar heat toward the earth, caused by gases such as carbon dioxide, methane, water vapor, ozone, and nitrous oxide in the atmosphere.

Front 17

global warming

Back 17

Predicted to increase the earth's temperature due to human activities that promote the greenhouse effect.

Front 18

spring overturn

Back 18

Mixing process that occurs in spring in stratified lakes whereby the oxygen-rich top waters mix with nutrient-rich bottom waters

Front 19

thermal inversion

Back 19

Temperatrue inversion that traps cold air and its pollutants near the earth with the warm air above it.

Front 20

upwelling

Back 20

Upward movement of deep, nutrient-rich water along coasts; it replaces surface waters that move away from shore when the direction of prevailing wind shifts.

Front 21

zooplankton

Back 21

Part of plankton containing protozoa and other types of microscopic animals.