the earths sixth greatest extinction by igor milgram, derrin miller, johny, scott richmond
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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.
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