Answer:
"crescendo"
Explanation:
Crescendo is an indication to gradually increase the volume of a song until otherwise noted. A crescendo is marked by a horizontal, opening angle
Greeks philosophers were the first to record their ideas about the physical properties of the world around them. The first theories of matter were put forward by Empedocles in 450 BC, he proposed that all matter was composed of four elements - Earth, air, fire and water.
