Examples of natural ecosystems include tropical rain forests, grasslands, deserts and coral reefs. A natural ecosystem is defined as the biological community in a certain location, as well as the physical and chemical factors that make up the environment.
Tropical rain forest ecosystems have very dense vegetation and a greater diversity in animal and plant species than any other type of ecosystem.
A grassland ecosystem mainly consists of grass with some trees and shrubs. Savanna grasslands have a large number of grazing animals and predators. Prairie grasslands are usually devoid of shrubs and trees.
A desert ecosystem is characterized by a dry climate, sparse vegetation, and very few animals and insects.
Coral reef ecosystems are located under the surface of oceans and are home to many types of coral and fish.