Explain the S-shaped pattern of population growth

Explain the S-shaped pattern of population growth. How is J-shaped pattern different from it and why?

S-shaped pattern of population growth form shows an initial gradual increase, followed by an exponential increase and then a gradual decline to a near constant level. It is different from J-shaped curve because J-shaped pattern shows exponential population growth and its abrupt crash after attaining the peak value.
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A-When resources are not limiting the growth, plot is exponential.
B-When resources are limiting the growth, plot is logistic, ATis the carrying capacity.