An ecosystem is a community of living and non-living
things that work together. An ecosystem can be as large as a desert
or a lake or as small as a tree or a puddle. An ecosystem includes
soil, atmosphere, heat and light from the sun, water and living organisms.
A healthy ecosystem has lots
of species diversity and is less likely to be seriously damaged by
human interaction, natural disasters and climate changes. The heat
and light from the sun are critical parts of an ecosystem. Without light
from the sun there would be no photosynthesis and plants wouldn't have the
energy they need to make food. Without water there would be life. Ecosystem have lots of different
living organisms that interact with each other. The living organisms
in an ecosystem can be divided into three categories: producers,
consumers and decomposers. They are all important
parts of an ecosystem. Producers are the green plants. There are three
types of consumers: herbivores are animals that eat herbivores and sometimes
other carnivores and omnivores are animals that eat plants and other animals.
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