What is heterotrophic nutrition? Explain its different types.

Explanation

### Step-by-Step Solution:

1. **Definition of Heterotrophic Nutrition**:
Heterotrophic nutrition is a mode of nutrition where organisms cannot produce their own food and depend on other organisms for sustenance. This means that they rely on consuming other living beings or organic matter to obtain the nutrients they need to survive.

2. **Types of Heterotrophic Nutrition**:
Heterotrophic nutrition can be classified into three main types:

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