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So, basically, the creatures stick all around with arsenic (which, as a matter of fact, is a poisonous substance) instead of phosphorous for their cells and DNA, which means that we are quite likely surrounded by a bunch of other unique life-forms without knowing it because of our strict definition of life forms as things that necessarily go with nytrogen, oxygen, phosphorous, hydrogen, carbon, and sulfur. This also happens to be a great boing for possibilities of extraterrestrial life, for quite obvious reasons.
Pretty amazing, eh?
So, basically, the creatures stick all around with arsenic (which, as a matter of fact, is a poisonous substance) instead of phosphorous for their cells and DNA, which means that we are quite likely surrounded by a bunch of other unique life-forms without knowing it because of our strict definition of life forms as things that necessarily go with nytrogen, oxygen, phosphorous, hydrogen, carbon, and sulfur. This also happens to be a great boing for possibilities of extraterrestrial life, for quite obvious reasons.
Pretty amazing, eh?