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.
Inorganic nutrients that facilitate growth and development in organisms include phosphorous, calcium, nitrogen, iron and fluorine. There are many different kinds of inorganic nutrients, and they are all characterized by their lack of carbon-to-carbon bonds.
For example, the inorganic forms of nutrients essential to plant life â principally nitrogen, phosphorous, and sulfur â can be readily absorbed and used by plants. Their organic counterparts, on the other hand, have to be broken down into simpler forms before the nutrients they hold can be absorbed.