3.5.1 Classification

Polar Bear and Panda

Panda and Grizzly

Grizzly and Polar Bear

The system recognized three domains.

The system took evolutionary relationships into consideration.

The system classified organisms into six kingdoms.

All organisms were classified as either plants or animals.

More species have been discovered, but scientists have not analyzed all the data.

Technological advances have allowed scientists to better compare organisms.

All organisms compete to be at the top of the food chain.

All organisms struggle for existence and become extinct.