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"""""Soil porosity"""" refers to the amount of pore, or open space between soil particles. Pore spaces may be formed due to the movement of roots, worms, and insects; expanding gases trapped within these spaces by groundwater; and/or the dissolution of the soil parent material. Soil texture can also...
Grade Level   5 6 7 8 9 10
Classroom Activities Curricula and Instruction
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"Students complete a form that requires them to make decisions about how severely different types of marine debris affect animals, people, vessels, and habitat. As a class, results are totaled and analyzed to determine which types of marine debris are most harmful to the different categories....
Grade Level   4 5 6 7 8
Classroom Activities Curricula and Instruction
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