1 / 17

The Earths Sixth Greatest Extinction

The Earths Sixth Greatest Extinction. By Igor Milgram, Derrin Miller, Johny, Scott Richmond. The 5 Past Extinctions. Ordovician-Silurian extinction: 439 million years Late Devonian extinction: 364 million years ago Permian-Triassic extinction: about 251 million years ago

quilla
Download Presentation

The Earths Sixth Greatest Extinction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Earths Sixth Greatest Extinction By Igor Milgram, Derrin Miller, Johny, Scott Richmond

  2. The 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

  3. Current 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.

  4. The 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.

  5. All 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

  6. The 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.

  7. Domino 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.

  8. Current Causes • Pollutants • Pesticides • Ultra-violet radiation • Climate change • Habitat loss from agriculture and cities • Hunting and Poaching • Man Made Borders • Many more…

  9. Fences • 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.

  10. 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% The Disappearing Forests

  11. Why?

  12. 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.

  13. United Nations Environment 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.

  14. What can each of us do? • Reduce our carbon footprints • Learn about Local endangered species • RECYCLE!!! • Protect wildlife habitat.

More Related