1. Soil is made from stone, humus, water, air and leaves.
2. There are three different types of soil called clay, sand and silt. The difference is they shoot oxygen.
3. We need soil because plants need to grow and animals eat plant's and we eat animals and plant's give us oxygen.
4. CHALLENGE: What do worms do that is important for soil? Worm's eat the soil then poo it out fresh that's what makes worm's important.

by Zach