Multiple choice

1,000 years = 1 cm of soil. To keep our soil healthy, people try to prevent...

  1. plant growth

  2. farming

  3. earthworms

  4. soil erosion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil erosion is the process by which the top layer of soil is removed by wind or water. Since soil formation is a very slow process, preventing erosion is critical for maintaining soil health.

Keep practicing — related questions