# Survival

 'Culture is how biology responds and makes living conditions better' C. J. Cherryh

 RARE A free content video streamed from Vimeo Avoid deletion: Upload a free format version of this video to the Commons[1].

## Introduction

Evolution results in diverse adaptations that ensure survival. This diversity allows organism to occupy different niches within an ecosystem.

Species arise, change, and become extinct over time

# Essential Questions

 How do organisms survive extreme environments?

# Preknowledge

 Characteristics are coded for by genes, which are sections of DNA with a specific base sequence. A species is defined as a group of organisms capable of successfully interbreeding and producing viable offspring. Genes are inherited from parents. A gene is a section of DNA with a specific base sequence coding for a characteristic A tiger is one species of large cat A lion another large cat species Ligers are produced from a Lion mating with a Tiger - so are they the same species then?

## Evolution

Evolution results in diverse adaptations that ensure survival. This diversity allows organism to occupy different niches within an ecosystem.

## Speciation

This diversity allows organisms to occupy different niches within an ecosystem.

## Extinction

Extinction events are part as the species lifecycle .