Q. 125.0( 4 Votes )

State ‘two’ obser

Answer :

Alexender von Humboldt during his extensive explorations in South American jungles made the following observations:

• Within a region species richness increases with increasing explored area but only upto a limit.

• This relation for a wide variety of taxa turns out to be a rectangular hyperbola.


‘r’ represents the intrinsic rate of natural increase. It is an important parameter for assessing impacts of any biotic or abiotic factor on population growth.

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