What was ARPANET?

a precursor to the Internet
an organization created to stabilize and unify the Internet
the first commercial Internet service
an organization devoted to standardizing the Internet

The amount of current is measured in units calledamperes or amps. one ampere of current is equal to the chargeof 6,240,000,000,000,000,000 electrons flowing past a given pointin a circuit per second

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 !