Carbon Monoxide would have been mostly to effect the embryo as it targets the respiration system.
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The child has inherited both the traits from his parents.
Look up Dawrin's theory of evolution. Basically, fossil records show how life forms change over time through evolution.
In the periodic tables metals are on the left side and nonmetals are in the right side.... so we can know whether an element is metal or nonmetal by it's position on the periodic table..
