The Earths Sixth The Earths Sixth Greatest ExtinctionGreatest Extinction

By Igor Milgram, Derrin Miller, By Igor Milgram, Derrin Miller, Johny, Scott RichmondJohny, Scott Richmond

The 5 Past ExtinctionsThe 5 Past Extinctions

• Ordovician-Silurian extinction: 439 million years

• Late Devonian extinction: 364 million years ago

• Permian-Triassic extinction: about 251 million years ago

• End Triassic extinction: roughly 199 million to 214 million years ago

• Cretaceous-Tertiary extinction: about 65 million years ago

Current ExtinctionCurrent Extinction

• The current extinction is beginning to rival all of the last five extinctions.

• It is the first extinction in earths history that is cause by a biotic source instead of physical cause.

The Current StatsThe Current Stats

• We are currently losing 40,000-50,000 species a year

• That is roughly 137 a day.

• Since 1600, 83 mammals species and 113 birds have become extinct.

All the statsAll the stats

• Threatened animal and plant species : 11,046• Known species humans have forced to

extinction in past 500 years: 816• Threatened animals and plants in the United

States: 998• 20% Known Amphibian species • 24% Known of Mammals• 25% Known of Reptiles• 30% Known of Fish

The First CauseThe First Cause

• The invention of Agriculture is the first cause of this problem.

• It let us become separated from other species.

• We changed the earth for our needs.

Domino EffectDomino Effect

• All species have an effect on each other

• If one species dies it could cause the co-extinction of another species

• Some species directly affect the health of hundreds of other species.

Current CausesCurrent Causes

• Pollutants • Pesticides • Ultra-violet radiation • Climate change• Habitat loss from

agriculture and cities• Hunting and Poaching• Man Made Borders• Many more…

FencesFences

• Humans love to fence off space they say belongs to them.

• This stops animals from getting to needed food sources.

• Fences cuts off food sources for animals which leads to village attacks, which leads to more killing of animals.

The Disappearing ForestsThe Disappearing Forests• Roughly 21% of the

land-mass is covered with closed-canopy forests

• There are only formal bans on 9% of the worlds forests.

• The Earth's forests hold over 50% of all known species.

Top Five Countries• Russia: 23.3%

• Canada: 12.8%• Brazil: 12.6%

• United States: 8.2%• Democratic Republic

of the Congo: 4.0%

Why?Why?

Is there a way out? Is there a way out?

• The world needs international cooperation to sustain the environment.

• Countries ban the cutting down forests

• Reduce Co2 emissions.

• Reduce Human Population.

• End destruction of land for Agriculture.

United Nations Environment United Nations Environment Programme Programme

• Monitors status of global environment

• Making international agreements Combining economic development and environmental protection.

• Allows the transfer of knowledge and technology for sustainable development.

What can each of us do?What can each of us do?

• Reduce our carbon footprints

• Learn about Local endangered species

• RECYCLE!!!• Protect wildlife

habitat.