All the living organisms and non-living factors of the earth constitute

Options

A. Biosphere
B. Community
C. Biome
D. Association.

Answer

To solve the question "All the living organisms and non-living factors of the earth constitute," we will analyze the given options and their definitions step by step.

### Step 1: Understand the Question
The question is asking for a term that encompasses both living organisms (biotic factors) and non-living factors (abiotic factors) of the Earth.

### Step 2: Analyze the Options
We have four options to consider:
1. **Biosphere**
2. **Community**
3. **Biome**
4. **Association**

### Step 3: Define Each Option
1. **Biosphere**: This refers to the global sum of all ecosystems. It includes all living organisms (biotic factors) on Earth and their relationships with the environment (abiotic factors). However, it is more focused on the living aspect rather than the combination of both living and non-living factors.

2. **Community**: A community consists of different species that live in the same area and interact with each other. This term primarily focuses on the biotic components and does not include abiotic factors.

3. **Biome**: A biome is a large ecological area on Earth’s surface, with flora and fauna (living organisms) adapting to their environment (non-living factors). This term encompasses both biotic and abiotic components, making it a strong candidate for our answer.

4. **Association**: This term refers to a group of species that live together in a predictable manner. It is similar to a community but does not encompass the abiotic factors.

### Step 4: Identify the Correct Answer
After analyzing the definitions:
- The **biosphere** includes living organisms but is not focused on non-living factors.
- The **community** and **association** focus primarily on living organisms.
- The **biome** includes both living organisms and non-living factors, making it the most appropriate answer.

Thus, the correct answer is **Biome**.

### Final Answer
All the living organisms and non-living factors of the earth constitute a **Biome**.

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