Answer:
You did very well and its correct.
Explanation:
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The ion is positively charged because it has fewer electrons than the atom.
Coal a is a chemical compound. It is pure carbon. You cannot separate carbon into other molecules without changing its chemical consitution.
Petroleum is a mixture of many chemical compounds, hydrocarbons, plus other elements. Petroleum components contain carbon, hydrogen, oxygen, nitrogen, sulfur, and some metal traces. The different compounds that consitute the petroleum can be separated by physical media like distillation.
Answer: Mutations are important to the evolution of a species because is creates new DNA for a certain gene, creating a new allele.
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