Answer:
An
ecosystem comprises the physical environment.
It is an interlinked system with the plants and animals living therein
linked to each other.
Ecosystems have evolved over a period of thousands of
years.
Some examples of interlinking are
(i) Insects help in pollination of crops and fruit
trees. Some insects also exert biological control on
harmful insects.
(ii) Carnivorous animals kill herbivorous animals for food
and herbivorous animals consume plants for food.
(iii) Decomposers like fungi and bacteria fertilise the soil
with humus by decomposing dead animals and plants to enable plants to grow.
There are many such examples of interlinking to show that every species has a
role to play in the ecosystem.
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