I'd say the 1st one: Carbon decays at a constant rate, and scientists measure the amount of carbon in a fossil to determine its age. (Half life of 5730 years)
Answer:
it means the study of human speech including the units, nature, structure and modification of language.
<span>Brigham Young led the mormons into the Utah valleys salt lake </span>
It was primarily the founder of Pennsylvania, William Penn who believed that tolerance was a great virtue, since he was a Quaker himself who had faced certain degrees of persecution
