soil

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Across
  1. 2. A tunnel or hole dug by an earthworm under the ground.
  2. 3. The hard, bottom layer of Earth made of solid rock.
  3. 5. One of the small, round rings that make up an earthworm's body.
  4. 6. The loose upper layer of Earth where plants grow (dirt).
Down
  1. 1. Good food in the soil that helps plants grow big and strong.
  2. 4. The top, dark layer of soil full of food for plants.