Rarest And Most Valuable Opals In The World Opal is composed of small beads of silica â alpha-cristobalite â low temperature, but tightly closed in a waterproof casing. Between these âbeadsâ have cavities that contain a small amount of water.
The presence or absence of carbon is what differentiates organic nutrients from inorganic nutrients. Carbohydrates, lipids, proteins and vitamins have carbon in their structure, making them organic. Water and minerals do not, so they are inorganic. Nutrition 101: Science of Nutrition / Science Courses.
A nutrient is a substance in food that the body needs in order to work properly. Nutrients refer to the substances that are metabolized by the  animals to build energy and pr â¦ ovide energy. A nutrient refers to any substance that can be metabolized by the  human bodies to build tissue and give energy. nutrient is a substance in food that the body needs in order to work properly. Nutrients refer to the substances that are metabolized by the  animals to build energy and pr â¦ ovide energy. A nutrient refers to any substance that can be metabolized by the  human bodies to build tissue and give energy.