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