Choose the source of energy which is different from others:

Options

A. wood
B. falling water
C. wind
D. petroleum

Answer

To solve the question of identifying the source of energy that is different from the others, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- Option 1: Wood
- Option 2: Falling Water (Hydropower)
- Option 3: Wind
- Option 4: Petroleum

2. **Classify Each Source**: We need to classify each energy source as either renewable or non-renewable.
- **Wood**: This is a renewable source of energy because it can be replenished through reforestation.
- **Falling Water (Hydropower)**: This is also a renewable source of energy because water cycles through the environment and can be harnessed repeatedly.
- **Wind**: Wind energy is renewable as it is generated from natural wind currents that are continuously replenished.
- **Petroleum**: This is a non-renewable source of energy because it is formed from fossilized organic material over millions of years and cannot be replenished in a human timeframe.

3. **Compare the Classifications**: Now we compare the classifications:
- Wood: Renewable
- Falling Water: Renewable
- Wind: Renewable
- Petroleum: Non-renewable

4. **Identify the Different Source**: From the classifications, we see that Wood, Falling Water, and Wind are all renewable sources of energy, while Petroleum is the only non-renewable source.

5. **Conclusion**: Therefore, the source of energy that is different from the others is **Petroleum**.

### Final Answer:
**Petroleum** is the source of energy which is different from the others.

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