Recognize which soil sample contains the highest concentration of organic matter. Students live in different areas of a school district. The soils found in the different areas are not the same. Each is changed by the type of vegetation and by the minerals that make up the soil.
Soils are similar because they all contain organic matter.
The amount of organic matter will determine the vegetation that will grow in that area. A-D. Remove the labels from the soda water bottles, and make sure they are clean and dry. A-D with a marking pen. Make your letters large. Continue this step for samples B-D. Place a different colored balloon by each bottle.