Pollution

-an unwanted change in the environment caused by substances or forms of energy

- anything that causes pollution

Garbage,

Chemicals

High-powered wastes

Gases

Noise

- kinds of pollution

Renewable Resource

- a natural resource that

  can be replaced at the same

  rate at which it is being used.

Nonrenewable Resource

- a resource that

  cannot be replaced

- one that takes thousand

  or millions of years to form.

Exotic Species

- an organism that makes

  a new home for itself

  outside of its native home

Overpopulation

-too many individuals in

 an area for the available

 resources

Human Population Growth

- is due to advances in

   medicine and farming

   techniques

Biodiversity

- the number and variety

  of species in a given area

  over a period of time

Deforestation

- the cutting, burning, &

  destruction of forest lands

Point-source pollution

- pollution that comes from

  one source (like an oil spill)

Nonpoint-source pollution

- pollution that comes from

  many different sources

  (EX. chemicals on land washed

   into lakes, rivers, streams)

Conservation

- the preservation and wise

  use of natural resources

- can help prevent habitat destruction

- helps reduce waste and pollution

Reduce

- the best way to conserve Earth's 

  natural resources

- use less amount of resources

Biodegradable

- anything that can be broken

  down by living organisms such

  as bacteria

Reuse

- to use a product again

  instead of throwing it away

- reclaim water by cleaning it

  and returning it to underground

  water supplies

Recycle

- the process of recovering

  valuable or useful materials

  from waste or scrap

Resource Recovery

- reusing resources to make

  something else

(using garbage to make electricity)

CFCs

- chemicals that can destroy

  the ozone layer

- chemicals that have been banned!

Fossil Fuels

- are nonrenewable resources

  such as coal and oil

- used for electricity

  and transportation