Assume coursetitle ="principles in information technology and computation";
what does the following javascript statement do?
var something = coursetitle. search('o');
it finds all o's and save them to variable something.
it saves the position of the first occurrence of "o" to variable something.
it saves the position of the last occurrence of "o" to variable something.
it will save a true or false to something depends on whether there is an 'o' in coursetitle.

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 !