Ecosystems in the World

An ecosystem is the gruoup of factors (biotic and abiotic) that interact in a certain region in order to coexist.
A biome is a large geographical area of distinctive plant and animal groups, which are adapted to that particular environment.The different biomes around the Earth are determined by the climate and the geography of the region. These 2 factors, in addition to some others, are the ones that determine the flora and fauna of each particular ecosystem.  
Some examples of ecosystems around the Earth are:

• Savanna
• Tropical Rain Forest
• Tundra
• Dessert
• Coniferous forest
• Grassland

And each one has specific areas around the globe in which they are present, as seen in the following image