MCQ
What causes soil erosion?
- ADeforestation
- BHigh speed winds
- CAfforestation
- ✓Both $1$ and $2$
Deforestation and high speed winds causes soil erosion.
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| Column A | Column B |
| 1. lodine solution | (A) Makes food easier to swallow |
| 2. Stomach | (B) Mechanical digestion |
| 3. Saliva | (C) Reacts with starch to give a blue-black color |
| 4. Mouth | (D) Breaks down proteins in the food |