An ecosystem is an area where all the plants and animals depend on each other, the weather, the ground, the water, the whole environment to survive. If one species is lost, the whole ecosystem becomes a little weaker.
Look at the examples of some of the ecosystems on our planet.
Rainforest
Forest
Courtesy of the Irish Wildlife Trust
Forest - Courtesy of the Irish Wildlife Trust
Desert
Desert -
Lake
Lake at Glendalough
Copyright John KennedyLake - Copyright John Kennedy
The Coast
Ballinesker Beach, Co. Wexford
Copyright George McHughThe Coast - Copyright George McHugh
The Ocean
The Ocean -
Mountains