Continuously Planting Crops Deplete soil of Nitrogen Dumping Nitrogen Containing compounds in...
-
Upload
marcus-robertson -
Category
Documents
-
view
221 -
download
1
Transcript of Continuously Planting Crops Deplete soil of Nitrogen Dumping Nitrogen Containing compounds in...
Continuously Planting Crops Deplete soil of
Nitrogen
Dumping Nitrogen Containing compounds in lakes. Uncontrolled
growth of plants
HUMAN IMPACT
Cutting down forests (Less Co2 being absorbed)
Burning of Fossil Fuels (More Co2 being released)
OZONE-THINNING
Chlorofluorocarbons (CFC’s): Once widely used as coolants
and propellant in aerosol cans Depletes the Ozone layer More UV-rays hitting the earth Discovered in 1980’s
GLOBAL WARMING
More greenhouse gasses in the atmosphere because of burning of fossil fuels Scientists noticed increase
in global temperatures as CO2 levels have increased.
ATMOSPHERIC CARBON DIOXIDE
GLOBAL TEMPERATURES
ACID PRECIPITATION (RAIN)
Air Pollutants + Water forms ACID! Increased acidity of soil or
water can cause disease or death in trees, fish, and other organisms
Neutralizing a Volcanic Acid
lake.
BIOLOGICAL MAGNIFICATION
When toxic chemicals become more concentrated in the tertiary consumers of an ecosystem. Example: DDT &
Mercury
ECOSYSTEM DISRUPTION
Extinction The Death of Every
member of the species. Endangered
A species who is in danger of extinction
CAUSES
Habitat Destruction: Cutting down of forests Damming rivers Draining swamps Surface mining Logging Clearing of land for
buildings/roads Hunting/Poaching
EXAMPLE: SEA OTTER
Web LinksSea Otter Web Cam
Kelp Forest at Monterey Bay Aquarium
OVER –USAGE OF RESOURCES
Sustainability The idea that the human
population can SURVIVE indefinitely!
What has to happen? Renewable resources
(continue to plant) Our needs vs. Earth’s
Needs vs. Needs of Other Species?
GO GREEN!
RENEWABLE NON-RENEWABLE
Water
TreesWind
Oil
Metal/Minerals