Answer
Organic molecules are the one with Carbon as a central atom. Carbon has the ability to make bond with four atoms or groups, which results in a very diverse type of compounds. Also Carbon can form single, double and triple bonds.
Carbon is the fundamental element of life due to following reasons:
1. It is the principle component of all organic molecules like proteins, fatty acids, carbohydrates, etc
2. It has the functionality of binding up to four functional groups around a single carbon atom and changing of bonds from single to double or triple, which plays a critical role in many organic compounds which are vital for subsistence of life.
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