1. What is an Endangered Species?
A species that is at risk of extinction.
Species with a small or declining population, or a very small range.
Tiger
Golden frog
Grandidier’s baobab

2. Human Impact HIPPO Habitat alteration Pollution Population growth
TeacherTube Videos - Whats your impact
Human Impact
What's Your Impact
Today, species are disappearing at an extraordinary rate—an estimated 30 to 75 species a day. In most cases, these extinctions are the result of human activity.
HIPPO
Primary causes spell
Habitat alteration
Invasive species
Pollution
Population growth
Overconsumption

3. Habitat alteration The greatest cause of extinction today
Accounts for 85% of population declines of birds and mammals
Habitat change hurts most organisms because they are adapted to an existing habitat.
Alteration due to:
Forest clearing Urban development
Agriculture

4. Invasive species
Accidental or intentional introduction of exotic species to new areas
Cause problems with native species ex: spread disease
New species do not have predators, usually take over area
Example : European zebra mussels hitched rides on cargo and cruise ships and now pose a great threat to the health of the Great Lakes and other northeastern United States lakes.

5. Pollution Caused by many human activities: Air and water pollution
- Logging causes soil erosion polluting streams
- cars, power plants release carbon monoxide
and carbon dioxide into air
Agricultural runoff
- fertilizers, animal wastes
Industrial chemicals
- Insecticides, oil spills

6. Population Growth Today, over 7 billion people are living on Earth.
Human population growth exacerbates every other environmental problem.
Today, over 7 billion people are living on Earth.
Each year we add about 80 million more.
This growing population puts tremendous pressure on the Earth’s resources, hastening destruction of habitat and increasing pollution.

7. Overconsumption
Using resources faster than natural processes can replenish them
Two meanings:
Overharvesting of species from the wild
(too much hunting, fishing…)
Overconsumption of resources
(too much timber cutting, fossil fuel use…)

8. HIPPO: Invasive species Pollution Population growth Overconsumption
Habitat alteration
Invasive species
Pollution
Population growth
Overconsumption

9. How can you make a difference?
Smart shopping: look for packages that are recyclable or made of recycled materials
Go for a walk ,clean an area by picking up trash
Earth hour: A world-wide initiative to have households, businesses, and schools turn off their electricity for at least one hour to reduce the impact on global climate changes on Earth.
Earth Hour 2012 Official Video – YouTube
Take a shorter shower/ turn off water while brushing your teeth