Pollution+of+the+lakes

CONTINUING POLLUTION CHANGES

One of the pollutions is Runoff which means that the water not absorbed by soil-travels over the ground, picking up pollutants from soil, & then into lakes & rivers. Old toxic wastes also pollute because many contain poisons that end up into lakes, rivers, & oceans. Pollution from the air also damage waterways. Canada & the U.S are working together to pass laws to save the environment. Cleaning up the lakes is really costly & difficult.


 * point-source pollution: the pollution from a single source,such as discharge pipe at a sewage treatment plant or a factory non-point source pollution: pollution that comes from many sources
 * Runoff: the water not absorbed by soil
 * toxic chemicals: a chemical that is poisonous to to humans or other living things.
 * pollutants: something that pollutes or damages air, soil, or water.
 * sediment: