The speed is not stable/constant , it`s changing
I believe a. is the answer
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Answer:
The atom
Explanation:
The basic unit of matter is the "atom." All matter consists of millions of atoms that within the atom contains electrons, protons, and neutrons. Knowing how many electrons, protons, and neutrons a atom has can determine the element which are substances that are on the periodic table.
Hope this helps.
Answer: A. Medical errors
Explanation:
The research states that medical error comes in next right after deaths caused by heart diseases and cancers (the later two causing at least 250,000 deaths every year).