what is ecosystem?????
Answers
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Ecosystem :
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.Energy enters the system through photosynthesis and is incorporated into plant tissue. By feeding on plants and on one-another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and other microbes.
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An ecosystem can be visualised as a functional unit of nature where living organisms interact among themselves
and also with the surrounding physical environment.Since this system is too much big and complex to be studied at one time it is convenient
to divide it into two basic categories namely the
terrestrial and the aquatic. Ecosystem varies greatly in size from a small pond to a
large forest or a sea. Many ecologists regard the entire
biosphere as a global ecosystem as a composite of all
local ecosystems on Earth.Forest, grassland and desert
are some examples of terrestrial ecosystems pond, lake,
wetland, river and estuary are some examples of aquatic
ecosystems. Crop fields and an aquarium may also be
considered as man-made ecosystems.