For this task, you will need to have two ifstream objects open. One for the dna file, and one for the dictionary of codons file. The same code segment from Task A can be adapted to read dna2b. txt since we only read it once. However, for each codon in each of the DNA strand, we need to perform a dictionary lookup. It would not be very efficient to open, read, and close the file each time. The reason is because repetitive file access can become expensive and slow in the long run. The better alternative is to open the file once with one ifstream object, pass it by reference, and reset the file pointer to the beginning for each look up. This can be done with seekg(0). Below is an example that shows how to read from a file that has two fields per line where the delimiter is a space. You can modify this code to perform a look-up in codons. tsv.

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 !

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