On a set of steps, the first step from the base of the steps is labeled 1 11, the second is labeled 2 22, and so on. Each step has the same height. The table below shows the step number and step's height from the base of the steps.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves