Listen to the living things talk about their jobs in an ecosystem.
NARRATOR: Here on earth lots and lots of different kinds of plants and animals all live together. And actually, none of them could exist by themselves.
TREE: I'm looooooonely!!!
NARRATOR: That's not really because they'd be lonely. It's because different creatures are all doing different jobs, as if they're part of a team, and all those jobs are important.
TREE: Right, we need a team here! You! I need you to make oxygen! Go!
GRASS: Okay.
TREE: You! Make sure there aren't too many plants! You! Make sure there isn't poo all over the place! You! Get rid of any weak animals!
NARRATOR: And lots of different creatures all depending on each other to live is what we call an ecosystem.
Ecosystems
A community of animals, plants and microorganisms, together with their habitat is called an ecosystem.
For example, a pond ecosystem may consist of a pond habitat, inhabited by aquatic plants, microorganisms in the mud at the bottom, fish in the water and a heron on the bank.
If one part of an ecosystem is changed, this may affect other living things in the ecosystem. For example, if a disease suddenly wipes out the plants in a pond, it might affect the fish and heron because they have less food to eat.
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