The flow of materials from non living components to living components and back to the non living components in a more or less cyclic manner is called a-

Options

A. Gaseous cycle
B. Sedimentary cycle
C. Biogeochemical cycle
D. Hydrologic cycle.

Answer

To solve the question regarding the flow of materials from non-living components to living components and back to non-living components in a cyclic manner, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Ecosystem**:
- An ecosystem consists of biotic (living) and abiotic (non-living) components. The interaction between these two components is crucial for the functioning of the ecosystem.

2. **Identifying the Flow of Materials**:
- The question specifies a cyclic flow of materials, which means that there is a continuous exchange of substances between living organisms and their environment.

3. **Defining the Term**:
- The term that describes the flow of materials between living and non-living components in a cyclic manner is known as a "biogeochemical cycle". This term combines "bio" (referring to living organisms) and "geo" (referring to the earth or non-living components).

4. **Evaluating the Options**:
- **Gaseous Cycle**: This is a type of biogeochemical cycle (e.g., carbon cycle) but does not encompass the entire concept.
- **Sedimentary Cycle**: This refers to cycles involving sediment and is also a type of biogeochemical cycle (e.g., phosphorus cycle).
- **Hydrological Cycle**: This specifically refers to the water cycle and does not fully capture the concept of material flow between living and non-living components.

5. **Conclusion**:
- Since the question asks for the broader term that includes all types of material flow between biotic and abiotic components, the correct answer is **biogeochemical cycle**.

### Final Answer:
The flow of materials from non-living components to living components and back to non-living components in a more or less cyclic manner is called a **biogeochemical cycle**.

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