Memory Mixtures and Soil MemoryVersion en ligne Match the vocabulary word to the definition. par Michael Porter The upper layer of soil in which plants have most of their roots silt sand soil topsoil clay The largest particles of rock that make up soil a combination of two or more different substances that keep their identities mixture the remains of decayed plants or animals in the soil The breaking down of rocks on Earth’s surface into smaller pieces weathering humus A characteristic of matter that you can observe or measure directly physical property Particles of rock that are smaller than sand but larger than clay A mixture of water, air, tiny pieces of rock, and humus To be slowly broken down by the natural processes that destroy a plant or body decay The smallest particles of rock that make up soil
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