Pollution Flashcards
Define pollution.
The introduction of harmful substances, usually by humans, into the environment.
Name the three types of pollution.
Air, land and water.
Define air pollution.
The build-up of hazardous substances into the atmosphere that danger human life and other living matter.
What is the main cause of air pollution?
The burning of fossil fuels.
How can air pollution affect humans?
Can damage their health and cause breathing difficulties.
Name 2 ways of reducing air pollution.
Catalytic converters on car exhausts.
Scrubbers in industrial chimneys which clean out the gases before they are released into the atmosphere.
Name the sources of water pollution.
Household sewage Dumping of litter in the sea Industrial waste from factories Nuclear waste OIl spills Eutrophication from fertilisers (fertilisers being washed off fields into rivers and lakes, algae bloom occurs)
Define land pollution.
The introduction of contaminant material to the environment.
Name the sources of land pollution.
Agriculture Mining and quarrying Sewage and sludge Household DEmolition and construction
What are materials that do not degrade naturally classed as?
Non-degradeable
Name some ways to reduce land pollution.
Recycling, limit the use of pesticides, make compost and use more organic products.
