This mineral provides your muscles with the nutrients they need to properly contract. It also helps keep your nerves, heart, and kidney healthy. Potassium may help fight osteoporosis. Magnesium is partially responsible for keeping your heart beating at a normal pace. You need zinc to keep your immune system working properly.
Organic materials are biotic .
In other words, they are made of living or dead organisms. Dead and dying plants, including fallen leaves, may form a layer of organic material. Dead animals or parts of animals, such as feathers and droppings, may also be included in this organic matter. This layer may be prowled by animals, probed by plant roots and pelted by rain. Slowly but surely, pieces of this organic material are worked into the soil below.