Chapter 2. section 4 Human-environment interaction Part 1 The

Main idea: Human activity can have a
negative impact on the air.
Examples?? Types of activities or their
Air Pollution Smog=chemicals that combine w/
oxygen in the ozone. Found in cities.
Cause breathing problems.
 Smog City 2
 Smog pictures
 Thoughts on smog in Korea or where
you have lived?
Air Pollution continued Acid rain=chemicals in pollution
combine w/rain.
 Kill fish, eat away at surfaces and kill
plant life. Acid rain pics
 Destroying the ozone damages Earth’s
ability to block damaging rays from the
sun that cause skin cancer.
Greenhouse affect
 Gases in the atmosphere trap the sun’s
 Pollution may be strengthening the
 Global warming
 May be caused by burning?
 Coal, oil and natural gas. Video clip
Main idea: Some human activity
damages our environment.
 Lithosphere=earth’s crust
 Topsoil important part of lithosphere
 Crop rotation-changing what is
grown year to year helps to protect
Deforestation-cutting down forests w/o
 Causes loss of topsoil, extinction of
plants and animals, less oxygen and
more carbon dioxide
 Video clip
Main Idea: Water pollution poses a threat
to a vital and limited resource.
 Hydrosphere=Earth’s surface water
and ground water.
 Conservation= careful use of a
resource, to avoid waste.
Irrigation=how H2O is distributed to
Often wasteful bc much evaporates or soaks into the
ground before getting to the crops.
Pesticides used to kill insects often
poison the water and soil.
Biosphere=collection of plants and
animals that live on Earth.
 Made up of many ecosystems=a place
shared plants and animals that
depend on one another for survival.
 Biodiversity=the variety of plants and
animals living on the planet.
 Is shrinking due to pollution and