Q 2664880755.     a) Name the two growth models that represent population growth and draw the
respective growth curves they represent.
(b) State the basics for the difference in the shape of these curves
(c) Which one of the curves represents the human population growth at present? Do
you think such a curve is sustainable? Give reason in support of your answer.
OR
(a) Taking an example of a small pond, explain how the four components of an
ecosystem function as a unit.
(b) Name the type of food chain that exists in a pond.

CBSE-12th 2016

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