Differentiate between Heartwood and sapwood

Explanation

### Step-by-Step Solution

1. **Definition**:
- **Heartwood**: This is the dense inner part of a tree trunk, which is typically darker in color.
- **Sapwood**: This is the softer outer layer of wood located between the heartwood and the bark, usually lighter in color.

2. **Location**:
- **Heartwood**: Found at the center of the stem.
...