<span>A paid teacher of philosophy and rhetoric in ancient Greece, associated in popular thought with moral skepticism and specious reasoning.</span>
rocks are used for making carvings sculpture
rocks consist useful minerals like gold silver
soil is formed by disintegration of rocks
rock salt is found in rocks which is used for freezing and cooking
The 2nd one: What social skills are built by playing sports.
The author is trying to convince schools to give students computers