Question

State 'two observations made by German naturalist, Alexender von
Humboldt during his extensive explorations in South American jungles.
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Answer 1

Explanation

His observations were -

• Within a region species richness increased with increasing explored area but only upto a limit.
• The relation between species richness and area for a wide variety of taxa is a rectangular hyperbola.

Answer 2

Answer:

Alexander von Humboldt observed that within a regional species richness increased with the increasing explored area, but only up to a limit.