sentence2_structure: Carbon (c)<>is<>essential to living organisms<>because carbon bonds in many ways with itself to form chains$$$carbon bonds in many ways with itself<>to form<>chains
sentence1: An easy way to remember the six most essential elements in living organisms is CHONPC (carbon, hydrogen, oxygen, nitrogen, phosphorus, and calcium).
sentence2: Carbon (c) is essential to living organisms because carbon bonds in many ways with itself to form chains.
question: What characteristic of carbon (C) makes it essential to living organisms?