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Biodiversity is under threat from human activities. In this lesson you will learn why biodiversity matters, what threatens it, and how conservation efforts work to protect species and ecosystems.
Biodiversity is the variety of all the different species of organisms on Earth, or within a particular ecosystem.
Biodiversity can be measured at different levels:
| Level | Description |
|---|---|
| Species diversity | The number of different species AND the abundance of each species in an area |
| Genetic diversity | The variation of genes within a species |
| Ecosystem diversity | The range of different ecosystems in an area (e.g. forests, wetlands, grasslands) |
A high biodiversity means there is a wide variety of species with good population sizes.
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