Level of competition between species depends on
I. availability of resoureces
II. Population density
III. Group interaction of organism
Choose the correct combination

Options

A. I and II
B. I and III
C. II and III
D. I,II and III

Answer

To determine the level of competition between species, we need to analyze the three given factors: availability of resources, population density, and group interaction of organisms. Here’s a step-by-step breakdown:

### Step 1: Analyze Availability of Resources
- **Explanation**: The availability of resources such as food, water, and shelter is crucial for the survival of species. When resources are scarce, competition intensifies as species vie for limited supplies. Conversely, if resources are abundant, competition may decrease as all species can meet their needs without conflict.
- **Conclusion**: Availability of resources significantly affects the level of competition between species.

### Step 2: Evaluate Population Density
- **Explanation**: Population density refers to the number of individuals of a species per unit area. A higher population density can lead to increased competition as individuals are more likely to encounter each other and compete for the same resources. In contrast, a lower population density may result in less competition.
- **Conclusion**: Population density is a key factor influencing competition levels between species.

### Step 3: Consider Group Interaction of Organisms
- **Explanation**: The interactions among organisms, including social behavior and territoriality, can influence competition. For example, species that are more social may compete differently than solitary species. Group dynamics can either exacerbate competition (through increased interactions) or mitigate it (through cooperative behaviors).
- **Conclusion**: Group interaction among organisms also plays a significant role in determining the level of competition.

### Final Conclusion
Based on the analysis of all three factors:
- **Availability of Resources**: Affects competition levels.
- **Population Density**: Influences how intensely species compete.
- **Group Interaction of Organisms**: Determines the nature of competition.

Thus, the correct combination is **I, II, and III**. The answer is **4 (1, 2 & 3)**.

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