EARTH AND HUMAN ACTIVITY VOCABULARY PART 1

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Across
  1. 3. material: Parts of soil that were never alive, like sand, clay, or minerals.
  2. 5. layer under topsoil. It has fewer nutrients and more clay.
  3. 6. texture: How soil feels based on the size of its particles. Some soil feels rough, others smooth.
  4. 7. particles that feel soft, like flour. Silt holds some water.
  5. 10. top layer of soil. It’s where most plant roots grow and is full of nutrients.
  6. 11. Large soil particles that feel gritty. Sand doesn’t hold much water.
  7. 12. material: Things in the soil that once were alive, like dead leaves or roots. They help plants grow.
  8. 13. content: How much of the food (nutrients) plants need is in the soil. Healthy soil has a lot.
Down
  1. 1. tiny particles that feel sticky. Clay holds a lot of water but drains slowly.
  2. 2. The outer layer of the Earth that includes rocks and soil. It’s where we live and grow food.
  3. 4. rich part of soil made from decomposed plants and animals. It adds nutrients to the soil.
  4. 8. best mix of sand, silt, clay, and humus. It’s great for growing plants.
  5. 9. process of breaking down dead plants and animals into nutrients. Worms and bacteria help with this.
  6. 11. fertility: How good the soil is at helping plants grow. Fertile soil has nutrients and water.