Look at a tree. Let's find out how it works.
Leaves make food for the tree.
Leaves are green. Chlorophyll gives them the color.
Roots take in water and food from soil.
Bark protects the tree. It keeps insects away.
Bark keeps trees warm in cold and cool in heat.
Coast redwood bark is thick. It protects the tree from fire.
A trunk cut across shows rings. Heartwood is the pillar inside.
Pine trees carry seeds in cones. A maple seed has a wing.
Squirrels hide acorns by burying them. That moves oak seeds around.
Words to know
- chlorophyll: a green pigment
- heartwood: central pillar
- bark: tree's protection
