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8th Grade: Section 1.3

Across
Material primarily composed from living organisms
Measures the pull of gravity on an object
Reusing old materials
Provides standard names and descriptions of soil colors.
Material primarily composed of nonliving matter
Measures the amount of matter in an object
Layer of soil that contains less organic material and more mineral material
The layer of soil where the most organic material is found
The amount of space that matter takes up
Expresses the degree of acidity or basicity of a substance
Down
Atoms that are linked together
Measures how tightly packed matter is
Soil layer
A substance composed of decayed organisms' particles
The most basic unit of matter
Layer of soil that is solid rock and provides a firm foundation for the earth's surface
Contains sand, silt, clay, and humus mixtures