Alexander von Humboldt first proposed the idea that plant communities change with altitude just as they do with latitude. This is known as the

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Alexander von Humboldt proposed the concept of life zones, which suggests that plant communities change with altitude just as they do with latitude. This idea is also known as the life zone concept. It has been widely accepted and is still used today in identifying and mapping vegetation zones. The other options are not correct because there is no such thing as the “plant fallacy hypothesis” and neither vegetation similarity theory nor altitude-latitude hypothesis accurately describes this concept proposed by Humboldt.

Alexander Von Humboldt First Proposed the Idea That Plant Communities