Two species competing for the same resource can avoid competition by choosing different habits. This phenomenon is called _____and was supported by _____.

Options

A. competitive exclusion, Gause
B. competitive exclusion, MacArthur
C. resource partitioning, Gause
D. resource partitioning, MacArthur

Explanation

To answer the question, we need to fill in the blanks correctly based on the information provided in the video transcript.

1. **Understanding the Phenomenon**: The question states that two species competing for the same resource can avoid competition by choosing different habits. This behavior is a strategy that allows species to coexist without directly competing for the same resources.

2. **Identifying the Term**: The term that describes this phenomenon is "resource partitioning." Resource partitioning occurs when species divide resources to reduce competition, allowing them to coexist.

3. **Identifying the Support**: The question also asks for the name of the scientist who supported this concept. According to the transcript, this phenomenon was supported by the work of Robert MacArthur, who conducted an experiment with warblers.

4. **Final Answer**: Therefore, the completed statement is: "This phenomenon is called **resource partitioning** and was supported by **MacArthur**."

### Step-by-Step Solution:
1. Identify the phenomenon where species avoid competition by choosing different habits.
2. Recognize that this phenomenon is known as "resource partitioning."
3. Recall that this concept was supported by the research of Robert MacArthur, who demonstrated it with his study on warblers.
4. Combine the findings to fill in the blanks in the statement.

### Final Answer:
This phenomenon is called **resource partitioning** and was supported by **MacArthur**.