Each parent contribute 50 percent. A person have 46 genes and 23 comes from the mother and 23 comes from the father
That particular group of elements is reffered to as the "Noble Gasses"--a title that comes from the fact that these gases are very "secure" and don't mix well with other elements.
The colors of light emitted from heated atoms had very specific energies.
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If a substance absorbs energy but its temperature does not change, then the internal potential energy is changing.
