Which one of the following is not one of the three aspects studied in biogeochemical cycling?

Options

A. The nature and size of natural reservoir
B. The rate of movement between reservoirs
C. interaction between different biogeochemical cycles
D. Cration of their own biogeochemical cycles by new species.

Answer

To determine which option is not one of the three aspects studied in biogeochemical cycling, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Biogeochemical Cycling**:
- Biogeochemical cycling refers to the movement of elements and compounds between living organisms (biotic) and their environment (abiotic). This includes the cycling of nutrients like carbon, nitrogen, and phosphorus.

2. **Identify the Aspects of Biogeochemical Cycling**:
- The three main aspects studied in biogeochemical cycling are:
- **Nature and Size of Natural Reservoirs**: This refers to the sources and storage areas of nutrients in the environment.
- **Rate of Movement Between Reservoirs**: This aspect studies how quickly elements move from one reservoir to another.
- **Interaction Between Different Biogeochemical Cycles**: This involves understanding how different cycles (like carbon and nitrogen cycles) influence each other.

3. **Evaluate the Options**:
- Now, we will evaluate the provided options:
- **Option 1**: Nature and size of natural reservoir - This is a studied aspect.
- **Option 2**: Rate of movement between reservoirs - This is also a studied aspect.
- **Option 3**: Interaction between different biogeochemical cycles - This is another studied aspect.
- **Option 4**: Creation of their own biogeochemical cycle by new species - This is not typically studied in biogeochemical cycling.

4. **Conclusion**:
- The option that is not one of the three aspects studied in biogeochemical cycling is **Option 4: Creation of their own biogeochemical cycle by new species**.

### Final Answer:
The correct answer is **Option 4: Creation of their own biogeochemical cycle by new species**.

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