BBC
Bbc Nature: Prehistoric Life: Triassic Period
Overview of the Earth in the Triassic Period as told by photos, news, and external links with an emphasis on what grew then, what lived then, the causes of mass extinction, types of fossils, and what life was like in general.
BBC
Bbc Nature: Prehistoric Life: Pleistocene Epoch
Overview of the Earth in the Pleistocene Epoch told by photos, news, and external links with an emphasis on what grew then, what lived then, the causes of mass extinction, types of fossils, and what life was like in general.
BBC
Bbc Nature: Prehistoric Life: Cretaceous Period
Overview of the Earth in the Cretaceous Period told by photos, news, and external links with an emphasis on what grew and lived then, the causes of mass extinction, types of fossils, and what life was like in general.
BBC
Bbc Nature: Prehistoric Life
Explore life on ancient Earth with this site! Students can walk with dinosaurs to see what Earth looked like or investigate Earth's history. The site includes articles, pictures, timelines, and lots more.
CK-12 Foundation
Ck 12: Life Science: Human Causes of Extinction
[Free Registration/Login may be required to access all resource tools.] In addition to habitat destruction, other human-caused problems are also threatening many species. These include issues associated with climate change, pollution,...
BBC
Bbc Nature: Prehistoric Life: Cambrian Period
Overview of the Earth in the Cambrian Period told by photos, news, and external links with an emphasis on what grew and lived then, the causes of mass extinction, types of fossils, and what life was like in general.
BBC
Bbc Nature: Prehistoric Life: Devonian Period
Overview of the Earth in the Devonian Period told by photos, news, and external links with an emphasis on what grew and lived then, the causes of mass extinction, types of fossils, and what life was like in general.
CK-12 Foundation
Ck 12: Life Science: Mass Extinctions
[Free Registration/Login may be required to access all resource tools.] An organism goes extinct when all of the members of a species die out and no more members remain. Extinctions are part of natural selection. Species often go extinct...
Canadian Museum of Nature
Canadian Museum of Nature: Great Auk
A profile of the extinct Great Auk is provided here by the Canadian Museum of Nature.