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(A) Populations evolve to maximize their reproductive fitness,which is also known as Darwinian fitness (represented by the value $r$),in the habitats

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High $r$ value

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(A) Populations evolve to maximize their reproductive fitness,which is also known as Darwinian fitness (represented by the value $r$),in the habitats they inhabit. This $r$ value represents the intrinsic rate of natural increase or biotic potential of a population. Organisms that produce a large number of offspring with a high $r$ value are better able to survive and reproduce in their respective environments,thereby maximizing their fitness.

$Country$	$Birth\, rate$ $/1000$	$Death\, rate$ $/1000$
$M$	$15$	$5$
$N$	$25$	$10$
$O$	$35$	$18$
$P$	$48$	$41$

Populations evolve to maximize their reproductive fitness,also called Darwinian fitness,with:

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$A$: Under unlimited resource conditions,a population can show an exponential growth curve.
$R$: $A$ maximum possible number of individuals can always be supported when enough resources are available.

Ecological factors which prevent a species from producing at its maximum rate is termed as

The human population growth graph is:

The birth and death rates of four countries are given below. Which one will have the least population growth rate?
$Country$ $Birth\, rate$ $/1000$ $Death\, rate$ $/1000$
$M$ $15$ $5$
$N$ $25$ $10$
$O$ $35$ $18$
$P$ $48$ $41$

High growth at the time of the exponential phase of the human population growth curve is due to:

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