Sum of abiotic and biotic components of a geographical area is called ecosystem/biotic community.

Explanation

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The question asks about the sum of abiotic and biotic components in a geographical area.
- **Abiotic components** refer to the non-living elements of an ecosystem, such as temperature, water, soil, and light.
- **Biotic components** refer to the living organisms in an ecosystem, including plants, animals, and microorganisms.

2. **Defining Ecosystem**:
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