Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more general name for this class of material is biological materials.
Water is know to be biotic
In order for a barrier island to form, the coastal sand is organized into barrier islands. There are three conditions for an Island of this type to form.
1. There must be a sufficient supply of sand to form the island.
2. The sea level must be rising.
3. There needs to be winds and waves with sufficient energy to move the sand around
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D. endocrine!! This is for sure it
