The scientific method could not be used to authenticate UFO sightings. There is no way to set up a control and variable.
<span>Nitrogen:
The most abundant gas; obtained by plants from bacteria in the soil, and obtained by people from the food they eat.
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Besides creating<span> up </span>seventy-eight<span> of the Earth's atmosphere, </span>variety<span> 7|chemical element|element|gas} </span>features a<span> number of uses. Since </span>it's a gas<span>, it </span>is often used to<span> replace air and </span>cut back<span> or eliminate </span>reaction<span> of materials.</span>
<span>The most </span>necessary<span> use is in </span>making<span> ammonia, </span>that successively is employed to form plant food<span>, explosives and </span>alternative materials<span>. Finally, </span>N is employed<span> as a refrigerant for </span>terribly<span> low temperatures.</span>
It is b. A population with many phenotypes
Answer: browning
Explanation: a healed cut will have brown around it, a fresh cut will not have brown
It’s occurs at hot spots for example in the earths mantle
