Radiometric dating method. Geologists commonly used radiometric age-dating to determine the numerical age of rock and fossils based on the natural radioactive decay of certain elements, including potassium and carbon.
Answer: Aristotle and Ptolemy had both assumed each planet is attached to a single sphere, but geometers and astronomers could employ a number of such spheres to generate the observed motions of the planets.
Explanation:
When a cold front happens when speaking gusty, there is a sudden drop in temperature, and there is heavy rain. When warm front approaches, The air becomes noticeably warmer and more humid than it was before.
