Here's why:
* Organic molecules contain carbon and hydrogen, often bonded with other elements like oxygen, nitrogen, phosphorus, and sulfur.
* Life as we know it depends on the complex structures and functions of organic molecules. These molecules form the building blocks of cells and carry out essential biological processes.
* Key organic molecules in living things include:
* Carbohydrates: Provide energy and structural support.
* Lipids (fats and oils): Store energy, provide insulation, and make up cell membranes.
* Proteins: Act as enzymes, structural components, and transport molecules.
* Nucleic acids (DNA and RNA): Store and transmit genetic information.
While there are a few exceptions to this rule (some viruses use inorganic molecules), the vast majority of living organisms rely on organic molecules for their existence.