The study of the interactions among and between organisms and its physical environment is called.

Options

A. Ecosystem
B. Ecology
C. Eco-environment
D. Environmentology

Answer

To answer the question, "The study of the interactions among and between organisms and its physical environment is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Components**:
- The question refers to interactions between organisms (biotic components) and their physical environment (abiotic components). Biotic components include plants and animals, while abiotic components include factors like sunlight, temperature, pH, and rainfall.

2. **Identifying the Field of Study**:
- The study of these interactions is a scientific discipline that focuses on how living organisms interact with each other and with their environment.

3. **Defining the Term**:
- The term that encompasses the study of these interactions is "Ecology." Ecology examines the relationships between organisms and their environment, including how they depend on each other and the physical factors that influence their survival.

4. **Differentiating Related Terms**:
- It is important to distinguish ecology from similar terms:
- **Ecosystem**: Refers to a specific area where living organisms interact with their physical environment.
- **Environmentalogy**: Focuses on environmental factors, but is not a widely recognized term in scientific literature.
- **Eco-environment**: Refers to a specific environment but does not encompass the broader study of interactions.

5. **Conclusion**:
- Based on the definitions and distinctions made, the correct answer to the question is "Ecology."

### Final Answer:
The study of the interactions among and between organisms and its physical environment is called **Ecology**.

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