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Nutrients
The approximately 20 chemical elements known to be essential for the growth of living organisms, including nitrogen, sulfur, phosphorus, and carbon.
Source: Millennium Ecosystem Assessment Glossary
Micronutrients are essential nutrients that plants, humans, and animals need in very small amounts to grow, thrive, and stay healthy. They include vitamins and trace minerals such as iron, copper, and zinc.
Source: GreenFacts