In an ecosystem, the `10%` of energy available for transfer from one trophic level to the next is in the form of

Options

A. heart energy
B. light energy
C. chemical energy
D. mechanical energy

Explanation

To answer the question, "In an ecosystem, the `10%` of energy available for transfer from one trophic level to the next is in the form of," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Trophic Levels**:
- In an ecosystem, organisms are arranged in a hierarchy known as trophic levels. The first level consists of producers (like plants), the second level consists of primary consumers (herbivores), and the third level consists of secondary consumers (carnivores).

2. **The 10% Rule**:
- The 10% rule, also known as the energy transfer efficiency, states that when energy is transferred from one trophic level to the next, only about 10% of the energy is passed on. The remaining 90% is lost primarily through metabolic processes as heat.

3. **Energy Forms in Ecosystems**:
- The energy that is captured by producers (plants) comes from sunlight and is converted into chemical energy through photosynthesis. This chemical energy is stored in the form of food.

4. **Energy Transfer**:
- When a primary consumer (like a deer) eats the producer (grass), it obtains energy from the food in the form of chemical energy. Out of the total energy that the grass received from sunlight, only 10% is transferred to the deer.

5. **Conclusion**:
- Therefore, the 10% of energy that is available for transfer from one trophic level to the next is in the form of **chemical energy**.

### Final Answer:
The 10% of energy available for transfer from one trophic level to the next is in the form of **chemical energy**.

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