Review for Midterm
Card Set Information
Review for Midterm
SAIT ENVS320 environment
Terms for ENVS320 Environmental science/ecology
The gaseous envelope
surrounding the Earth, held in place by gravity.
When an aquifer is under pressure, a pipe drilled into the aquifer will flow without the
use of pumps, producing a naturally flowing watersource.
Groundwater resorces in some defined area
The concentration of toxic compounds is sequentially increased as an organism moves up the food chain. The lower forms of life may accumulate the toxic compounds into their tissues
The tendency for top predators in a food web to have the highest residues of certain chemicals, especially organochlorines.
The breakdown of organic molecules into simpler compoudns through the metabolic actions of microorganisms
All life on Earth, plus their ecosystems and environments.
Occurs when water table in the area immediately surrounding the well is lowered
Cone of depression
Increased primary productivity of an aquatic ecosystem, resulting from nutrient inputs.
The movement between, and storage of water in, various compartments of the hydrosphere.
The parts of the planet
that contain water, including the oceans, atmosphere, on land, in
surface water bodies, underground, and in organisms.
An approximately 80-km thick region of rigid, relatively light rocks that surround Earth’s plastic mantle.
The tendency to remain
chemically unchanged in the environment.
The exposure of organisms to chemicals or energy in quantities that exceed their tolerance, causing toxicity or other ecological damages.
An area of land in which water can infiltrate the surface and replenish an aquifer below.
Below the water table, all pores of rocks and soil are filled with
The downward shift of a land mass due to removal of groundwater below. (a sinkhole)
Above the water table, pores in rocks and soil are only partially filled with water.
The top surface of groundwater.
Two or more substances combined whose effect is greater than their individual effects
Two types of pollution sources
1. Point Source
2. Non Point Source
A term for the 'sphere' of people on earth
Name the 5 spheres
Geosphere (or Lithosphere)
A poisonous compounds that is produced in anoxic conditions