Enviormental science test quarter 3

watershed

An area of land drained by a river

erosion

The loss of fertile soil when it is blown away by wind or washed away by water

Urbanization

Trend in which more people live in cities

Amount of land area needed to support one person

ecological footprint

porous, water bearing layers of sand,gravel,and rock below earths surface

aquifer

Integration of ecological economic and social goals in resource management

ecosystem management

organisms created by combining natural and synthetic genes

genetically modified organism

point sources of pollution are dispersed often and difficult to identify

false

The largest source of ocean pollination comes from run off and leaks that ordinate on land.

true

Much of earths surface water is contained in aquifers

True

Pollutants from nonpoint sources generally wash into bodies of surface water along with rainfall or snowmelt

true

Fertilizers are chemicals that kill control or drive away pest species

false

Forests provide habitat, resources and essential ecological services

True

we produce abundant food, and food security is no longer a global issue

true

The enormous gains in crop yields brought about by green revolution technologies may soon stop because green revolution technologies are degrading the quality of soil they use 

true

water footprint

the total amount of water used to support a person

surface water

Lakes,rivers and streams

groundwater

Wells

point source pullulation

Discharge pollutants at specific locations

non-point pullulation

broad and diffuse areas and washes pollutants into bodies of water

primary water treatment

The first stage of waste water treatment

secondary water treatment

Microrgnisms used to remove dissolved organic matter

desertifacation

When land becomes dirt

overgrazing

Excessive grazing which causes damage to grassland

food security 

Access to enough safe, nutritous foods for healthy lifestyles

malnourishment

not getting enough nutrients