Login

Join for Free!
114806 members
table of contents table of contents

Tutorials » The Origins of Life

Origins of Life Tutorial
- The Origins of Life

1. Precambrian Times (Most Ancient)

All time before life existed, Earth was still a volatile environment, though the origins of life came around during this period.

2. Cambrian Period

The development of multi-cellular organisms, including sponges, primitive animals and various plant life, diversifying from old species

3. Ordovician > Permian Periods

The transition from primitive species to specialised organisms, the increasing of genetic diversity via sex, and the transition from sea to land

4. Triassic / Jurassic Periods

The arrival and dominance of dinosaurs in the air, land and sea, and how they developed from their ancestors and the causalities of their existence

5. Cretaceous Period

The removal of dinosaurs from planet Earth and the emergence of mammals and other more complex organisms

6. Tertiary Period

The evolution of man and further diversification of all species to present date. The transition of Neanderthal man to modern man.

7. Quaternary Period

The evolution of man and further diversification of all species to present date. The transition of Neanderthal man to modern man, and how our dominance of planet Earth has directly shaped the future timeline of planet Earth.


rating: 4.08 from 1599 votes | updated on: 7 May 2006 | views: 762393 |

Rate tutorial:







excellent!bad…