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Grade 5 Science · World 6: Microbe Zone · Level 40
Helpful in Nature
Cite decomposers, soil, gut bacteria, and oxygen from algae as evidence.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 40
- More evidence is outdoors. What happens to all the leaves that fall in a forest? Decomposers, such as bacteria and fungi, break them down.
- That breakdown returns nutrients to the soil, and plants use them to grow. Without decomposers, dead leaves and logs would pile up.
- Bacteria help inside you, too. Many bacteria in your gut help break down the food you eat.
- Tiny algae in water give off oxygen that animals need, and a large share of Earth's oxygen comes from ocean life like this. They're also food for small water animals.
Georgia Standards of Excellence in Science:
- S5L4.a — Construct an argument using scientific evidence to support a claim that some microorganisms are beneficial.