Add the integer remainder and power operations to (a) the arithmetic BNF or (b) EBNF of Figures 6.17 or 6.18. Use % for the remainder operation and ˆ for the power operation. Recall that the remainder operation is left-associative and has the same precedence as multiplication, but that power is right-associative (and has greater precedence than multiplication, so 2 ˆ 2 ˆ 3 = 256, not 64).Figure 6.17expr → expr + term | termterm →term * factor | factorfactor →( expr ) | numbernumber →number digit | digitdigit →0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9Figure 6.18expr →term { + term }term →factor { * factor }factor →( expr ) | numbernumber →digit { digit }digit →0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

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Through the process of sedimentation,sediment is turned back to rock to form sedimentation.the process of sedimentation is: > deposition-where fragments were deposited into the river or sea under gravity or travelling agent such as wind or water. > sedimentation-the fragments deposited in the river sedimented and accumulate> compaction-the layers of fragments deposited undergoes compaction due to the weight if the upper layers> cementation-chemical substance of the fragments such as cement dissolved into the water and cement the other fragments together to form sedimentary rock.thus,cementation and compaction are the process.on the other hand, transformation only occur when a rock under goes metamorphism(compaction or extreme heat).while recrystillization occurs when a rock is melted and cooled down,which also requires metamorphism to take place.hope it !