The climate near the equator is warm year-round and supports many species, so the biodiversity is rich. As one moves further from the equator, the presence of seasons causes more temperate regions to have less biodiversity because organisms must be adapted to multiple conditions.

Extreme regions with cold or dry conditions, such as the tundra and deserts, have the least biodiversity.

Areas at high elevations tend to have less biodiversity as the conditions are more difficult for many species to survive under.

In general, biodiversity increases as temperature increases. However, areas that experience extremes in either temperature, whether too hot or too cold, will have lower biodiversity.

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