How Does Evolution Occur?

A process in which organisms change over time Is based on the organisms phenotype Occurs because of a change in the environment There is a shift toward a particular trait.

Father of evolution Traveled around the world on the HMS Beagle Discovered three species Giant Tortoise Blue footed booby Finches

Is a group of organism who can mate and produce viable offspring

Adaptations are traits that are both beneficial and inheritable Variations are differences within a species Niche is a rile an organism plays within its environment

Natural selection is the process in choosing the organism that is best adapted to that environment based on four principals

To much offspring produced that can possibly survive

Occurs when resources are limited

Variations between a group or species

Only the best adapted will survivie