A rock pool on a seashore is described as a habitat and all the organisms that live in it are described as an ecosystem. The fact that there are many ecosystems on a shore, including rock pools, cliffs and sand dunes is mentioned. The habitats and ecosystems in a woodland are then described.

First broadcast:
25 March 2003

Use this clip to introduce or recap study of ecosystems. Ask students to put together a presentation on a particular ecosystem. They should carry out fieldwork to investigate biotic and abiotic factors and discuss their chosen ecosystem using these terms. The flow of energy through the ecosystem should be considered and the impact of addition or removal of species could be touched upon.