Radioactive dating, depending on the certain amount of radioactive decay it leaves through the years you can predict the oldest one!
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-procklown
Answer:
All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..
Explanation:
lumen means Empty space within an object(solid)
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Idk so I’m going to guess
In my opinion it is diluted and formed into concentrate and is then divided into proportion.
