Adaptation of plant life to extreme cold temperatures

How is plant life adapted to survive in freezing Arctic temperatures?

Animal adaptations to a hot climate

What adaptations and behavioural strategies can animals use to survive the desert heat?

Biodiversity and the human implications

Why is conserving biodiversity important for human existence?

Habitats and ecosystems

An introduction to habitats and ecosystems, using a seashore and woodland as examples.

Natural selection and survival of the fittest

What did Darwin mean by the terms 'natural selection' and 'survival of the fittest'?