5. Rocks that are made of _____ can be broken down when carbon dioxide in air combines with water to form carbonic acid. A. Acid C. Iron B. Calcite D. Rust 6. When is wind an agent of soil erosion? A. when it presses down rocks B. when it stops picking up rocks C. when it breaks rocks into pieces D. when it blows rocks pieces to other places 7. Which of the following is NOT a cause of soil erosion? A. Animals C. Sun B. People D. Water 8. Which of these can occur due to soil erosion? A. A rain mud C. Create acid rain B. Pollute air D. Pollute water bodies 9. Which of the following can prevent soil erosion? A. Reforestation C. Damming lakes B. Deforestation D. Reducing air pollution 10. What makes the water muddy after a heavy rain? A. the pebbles picked up by water B. the animals playing on the ground C. The soil and sand are mixed with water and carried by it D. The goddess of rain makes muddy rain fall on the ground.
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Answer:
1. B
2. A
3. A
Step-by-step explanation:
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