1 / 5

Factors of Extinction

Factors of Extinction. Extinction. A species is extinct if no members of that species are still alive. Most organisms that have ever lived on Earth are now extinct. Natural Factors. Volcanoes spewing greenhouse gases causes global warming

star
Download Presentation

Factors of 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. Factors of Extinction

  2. Extinction • A species is extinct if no members of that species are still alive. • Most organisms that have ever lived on Earth are now extinct.

  3. Natural Factors • Volcanoes spewing greenhouse gases causes global warming • global cooling during ice ages often caused by volcanic debris in atmosphere • changes in oxygen levels in seawater • a massive impact from an asteroid or comet • Plate tectonics can affect global climate patterns

  4. Natural extinctions have occurred throughout geologic history. Not all have been negative, in that extinctions often clear the way for new kinds of life. Natural Factors

  5. Human Factors • deforestation • removing natural habitats • over-harvesting • pollution • Man-made factors have caused extinctions in more recent times.

More Related