Competition for food, light, and space is most severe between two

Options

A. Closely related species growing in the same area (in the same niche)
B. Closely related species growing in different habitat
C. Distantly related species growing in the same habitat
D. Distantly related species growing in different habitat

Answer

To solve the question regarding competition for food, light, and space, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Competition**:
Competition occurs when two or more organisms vie for the same resources, such as food, light, and space. This is particularly significant in ecological contexts where resources are limited.

2. **Identify the Options**:
The options provided are:
- A) Closely related species growing in the same niche
- B) Closely related species growing in different habitats
- C) Distantly related species growing in the same habitat
- D) Distantly related species growing in different habitats

3. **Analyze Each Option**:
- **Option A**: Closely related species in the same niche are likely to have similar needs and requirements, leading to intense competition.
- **Option B**: Closely related species in different habitats may not compete as they are not sharing the same resources.
- **Option C**: Distantly related species in the same habitat may have different needs, reducing competition.
- **Option D**: Distantly related species in different habitats are unlikely to compete at all since they occupy different ecological niches.

4. **Determine the Most Severe Competition**:
The most severe competition for resources occurs between closely related species that occupy the same niche because they have similar ecological requirements. This leads to a higher likelihood of competition for food, light, and space.

5. **Select the Correct Answer**:
Based on the analysis, the correct answer is **Option A: Closely related species growing in the same niche**.

### Final Answer:
The correct answer is **Option A**: Closely related species growing in the same niche.

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