What forms the basis for classifying manures? Describe any two types of them.

Explanation

### Step-by-Step Text Solution

**Step 1: Understanding Manures**
Manures are organic substances that are used to enhance soil fertility. They can be derived from both animal and plant sources. The classification of manures is primarily based on their origin and composition.

**Step 2: Basis for Classifying Manures**
The basis for classifying manures is their origin, which can be either:
- **Animal origin**: Manures that come from animal waste.
...