Biology 2 - Extinction and Specification

Extinction and Specification

The fossil record contains many species that don't exist anymore - these species are said to be extinct.

Species become extinct for these reasons:

• The environment changes too quickly
• A new predator kills them all
• A new disease kills them all
• They can't compete with another (new) species for food
• A castrophic event happens that kills them all (volcanic eruptions etc... etc...)
• A new species develops

Specification

• A species is a group of similar organisms that can reproduce to give fertile offspring
• Specification is the development of a new species
• Specification occurs when populations…