Assigning a '+' sign for beneficial interaction, '-' sign for detrimental and '0' for neutral interaction, outcomes of competition can be represented as:

Options

A. `+ +`
B. `- -`
C. `- 0`
D. `+ -`

Answer

To solve the question regarding the representation of competition outcomes using '+' for beneficial interactions, '-' for detrimental interactions, and '0' for neutral interactions, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Interaction Signs**:
- '+' indicates a beneficial interaction for a species.
- '-' indicates a detrimental interaction for a species.
- '0' indicates a neutral interaction where neither species is affected.

2. **Identify the Nature of Competition**:
- In competition, two species vie for the same resources (like food, space, etc.).
- Typically, competition leads to one species being negatively impacted (detrimental) while the other may or may not be affected.

3. **Analyze Possible Outcomes**:
- **Outcome '+' '+'**: Both species benefit. This does not represent competition.
- **Outcome '-' '-'**: Both species are harmed. This is not a typical representation of competition.
- **Outcome '-' '0'**: One species is negatively affected (detrimental), while the other is unaffected (neutral). This can occur in competition.
- **Outcome '+' '-'**: One species benefits while the other is harmed. This does not accurately reflect competition either.

4. **Conclusion**:
- The most appropriate representation of competition, where one species is negatively impacted and the other is unaffected, is represented by the signs '-' and '0'.

5. **Final Answer**:
- Therefore, the outcome of competition can be represented as **'-' and '0'**.