Central and South America possess half of the world ... Savannas cover 60% of Africa and represent a transition from tropical forests to deserts. Trees in savannas are usually drought deciduous.

There are 45 different species of Iguanidae in the Caribbean and the tropical, subtropical and desert areas of North, Central, and South America, including the marine iguanas of the Galapágos and ...

They range from small (eg a freshwater pond) to global (eg the desert biome). Tropical rainforests - AQA Tropical rainforests are an important ecosystem with distinct characteristics and adaptations.