Your answer is b. cells come from cells :)
Answer:
Explanation:Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.
Answer:
Kyanite is a major raw material for the mullite used in spark plugs and other refractory porcelains. A clear, deep blue variety is sometimes cut as a gemstone.
Explanation:
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