Answer:
Carbon is so important it is sometimes called the building block of life. Carbon atoms can bond together to form short or very long chains. ... All of this is possible because carbon is a small element that is capable of covalently bonding to four other atoms. Carbon atoms can bond together to form branching networks.
Explanation:
Carbon is called the building block of life because of its ability to form long, durable chain.
Carbon can form four bonds and form a long chain. This chain can be branched. They are very durable chains.
For example - Nucleic acid, protien and lipids all have a Carbon backbone.
No other element has such ability to form long and durable chain.
Therefore, carbon is called the building block of life because of its ability to form long, durable chain.
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