Why are units required?

Explanation

### Step-by-Step Solution:

1. **Understanding Physical Quantities**:
- Physical quantities are measurable properties that can be quantified. They have two essential components: magnitude (how much) and unit (what standard is being used).
- Example: Mass is a physical quantity that can be measured.

2. **Role of Units**:
- Units provide a standard for measuring physical quantities. They help us understand the magnitude of the quantity in a meaningful way.
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