Soil and the Nitrogen Cycle

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Presentation transcript:

Soil and the Nitrogen Cycle Earth Science Lesson 6 TEKS: 3.11B, 4.11A, 5.6B

Recipe for Soil: Tiny pieces of weathered rock Decaying plant and animal matter

Types of soils Loam Clay Sand

Nitrogen Gas Makes up 70% of our atmosphere Living things need it, but cannot use it from the atmosphere.

The Nitrogen Cycle Nitrogen in the atmosphere Decomposers release the nitrogen back to the atmosphere Bacteria Fix the nitrogen Animals eat the plants and release waste or die. Plants take it in.

Decomposers Bacteria Earthworms Mushrooms Crickets Cockroaches

Out on the Prairie Plants are Poo Poo Coo Coo! Song by Lucas Miller

Vocabulary Soil: A material made up of tiny pieces of weathered rock. Humus: decaying plant and animal material in the soil. Loam: Soil rich in nutrients that is good for plant growth. Nitrogen Cycle: The movement of nitrogen between organisms and the environment. Decomposers: organisms that break down dead materials and wastes.