Alexander Von Humbolt described for the first time

Options

A. Ecological Biodiversity
B. Laws of limiting factor
C. Species area relationship
D. Population Growth equation

Explanation

To solve the question regarding what Alexander Von Humboldt described for the first time, let's analyze the options provided step by step.

### Step 1: Understand the Options
1. **Ecological Biodiversity**: This term refers to the variety of ecosystems present on Earth, including different habitats and communities. While Humboldt contributed to ecology, this specific term was not coined by him.

2. **Law of Limiting Factor**: This concept is based on Liebig's Law, which states that the growth of an organism is limited by the scarcest resource. Although important in ecology, this law is not attributed to Humboldt.

3. **Species Area Relationship**: This principle states that the number of species increases with the area sampled. Humboldt is credited with formulating this relationship, making it a significant contribution to biogeography and ecology.
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