Micronutrients can be classified based on the presence of in their chemical structures. According to this classification system, vitamins are organic and minerals are inorganic.

Carbon

Explanation:

Micronutrients include elements or groups needed by the body in order to survive. These elements or groups include vitamins and minerals.  Micronutrients can be divided into four categories:

1. water-soluble vitamins

2. Fat-soluble vitamins

3. Macrominerals

4. Trace minerals

The answer is Vitamins and minerals

Explanation:

Nutrient molecules maintain/build human cells and tissue, power chemical reactions, and combat disease.

Micro nutrients can be divided into four categories:

Vitamins are organic compound which an organism requires but cannot synthesize by itself in the amount required.

Vitamins are organic compounds made by plants and animals which can be broken down by heat, acid or air. Where as, minerals are inorganic, found in soil or water and cannot be broken down.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).