Suggest one word for each of the following statements/definitions :

Options

A. The physical and biological world where we live in
B. Each level of food chain where transfer of energy takes place.
C. The physical factors like temperature, rainfall, wind and soil of an ecosystem.
D. Organisms which depend on the producers either directly or indirectly for food.

Explanation

### Step-by-Step Text Solution:

1. **Identify the Definition**: The first statement refers to the physical and biological world where we live. This includes all living organisms and their physical surroundings.

**One Word Answer**: **Environment**

2. **Understand the Concept**: The second statement discusses the levels of a food chain where energy transfer occurs. Each level in a food chain represents a different stage of energy transfer.

...