<span> Situ Burning is a technique sometimes used by people responding to an oil spill.
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I am tempted to say that the nervous system processes the stimuli, or to be more specific, the neurons that go across our nervous system.
Carbon would be the answer to this because it is an element while water is a compound. In addition, carbon had 4 bonding sites which allows it to form a variety of molecules like sugars, proteins, and even DNA that are essential for life as we know it.