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Ecology Chapter 4
Ecology Chapter 4
15
Science
7th Grade
07/03/2010

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Term
pollution
Definition
an unwanted change in the environment caused by substances or forms of energy
Term
renewable resource
Definition
a natural resource that can be replaced at the same rate at which the resource is consumed
Term
nonrenewable resource
Definition
a resource that forms at a rate that is much slower than the rate at which it is consumed
Term
overpopulation
Definition
the presence of too many individuals in an area for the available resources
Term
exotic species
Definition
an organism that makes a home for itself in a new place outside its native home
Term
biodiversity
Definition
the number and variety of organisms in a given area during a specific period of time
Term
deforestation
Definition
the clearing of forest lands
Term
point source pollution
Definition
pollution that comes from one source
Term
nonpoint source pollution
Definition
pollution that comes from many different sources
Term
conservation
Definition
the preservation and wise use of natural resources
Term
biodegradable
Definition
can be broken down by living organisms
Term
recycling
Definition
the process of recovering valuable or useful materials from waste or scrap
Term
EPA - Environmental Protection Agency
Definition
a government organization that helps protect the environment
Term
hazardous waste
Definition
Waste that is harmful to humans and the environment
Term
radioactive waste
Definition
Hazardous waste produced by nuclear power plants
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