Organic Matter (decaying or decayed living things) and minerals (broken down rock) are what makes up soil particles. Soil that contains a partly decayed organic matter is called humus. Soil is a natural resource, like water and minerals. Healthy soil is critical in natural ecosystems and sustains our need to grow plants for food and fibre. Soil gives plants a place to sink their roots and anchor themselves. Soil is also a community with billions of organisms.
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