Human Impact on the Environment

Population growth leads to Industrialization Burning fossil fuels Non-renewable resources Pollution Increased CO 2 levels

Industrialization

Burning fossil fuels

Non-renewable resources

Pollution

Increased CO 2 levels

Acid Rain Burning of fossil fuels releases sulphates and nitrates into air Sulphates and nitrates mix with water vapor in air and form sulphuric acid and nitric acid

Burning of fossil fuels releases sulphates and nitrates into air

Sulphates and nitrates mix with water vapor in air and form sulphuric acid and nitric acid

Acidification of lakes Lakes and ponds can become so acidified that no life can live in them!

Lakes and ponds can become so acidified that no life can live in them!

Deforestation Population growth leads to the loss of natural habitats Cut down trees to build new homes Loss of biodiversity Loss of oxygen producers and CO 2 eliminators

Population growth leads to the loss of natural habitats

Cut down trees to build new homes

Loss of biodiversity

Loss of oxygen producers and CO 2 eliminators

Herbicides and Pesticides We spray pesticides and herbicides with out knowing the consequences DDT

We spray pesticides and herbicides with out knowing the consequences

DDT

DDT Claimed to be a miracle No effect on humans Can build up in the environment Biological magnification

Claimed to be a miracle

No effect on humans

Can build up in the environment

Biological magnification

Bioaccumulation Accumulated to such levels in top predators that it started having lethal effects. Endangered many species of birds, Including our Bald Eagles.

Accumulated to such levels in top predators that it started having lethal effects.

Endangered many species of birds, Including our Bald Eagles.

Ozone depletion In the ’80’s it became apparent that the ozone layer was disappearing It was confirmed that is was directly caused by human activity

In the ’80’s it became apparent that the ozone layer was disappearing

It was confirmed that is was directly caused by human activity

CFC’s Carbon-Flouro-Carbons in aerosols were leaking into the atmosphere and eating away the ozone Freon is also a CFC

Carbon-Flouro-Carbons in aerosols were leaking into the atmosphere and eating away the ozone

Freon is also a CFC

Pollution Water Pollution Oil Spills Gasoline spills Gets into drinking water

Water Pollution

Oil Spills

Gasoline spills

Gets into drinking water

Exxon Valdez

Global Warming Increase in CO2 Increase in greenhouse effect Increase in global temperatures

Increase in CO2

Increase in greenhouse effect

Increase in global temperatures