Complete the following sentence using the appropriate option.
X is the term popularized by Y , a Z to describe combined diversity at all the levels of biological organization.

Options

A. X - Ecosystem , Y - Alexander von Humboldt , Z - Geologist
B. X - Biodiversity , Y - Edward Wilson , Z - Sociobiologist .
C. X - Ecosystem , Y - Robert May , Z - Environmentalist
D. X - Ecology , Y - Gause , Z - Ecologist

Answer

To complete the sentence, we need to identify the correct terms for X, Y, and Z based on the information provided.

1. **Identify X**: The term that describes combined diversity at all levels of biological organization is "biodiversity." This term encompasses the variety of life forms, including species diversity, genetic diversity, and ecosystem diversity.

2. **Identify Y**: The scientist who popularized the term "biodiversity" is Edward Wilson. He is known for his work in ecology and sociobiology, and he emphasized the interconnectedness of species within ecosystems.

3. **Identify Z**: The term that describes the combined diversity at all levels of biological organization is "sociobiology." This field studies the biological basis of social behavior in animals, including how species interact within their ecosystems.

Putting it all together, the completed sentence is:
"**Biodiversity** is the term popularized by **Edward Wilson**, a **sociobiologist**, to describe combined diversity at all the levels of biological organization."