Please answe part a and b

a)mutated sequence DNA GGA GAG TTA

the codons for this sequence, since Guanine(G) pairs with cytosine(C) and adenine(A) pairs with thymine(T) that is replaced with uracil(U) in RNA are

CCU CUC AAU

the amino acids are

Proline-Leucine-Asparagine

b) the initial strand of DNA, GGG GAG TTA

had the complementary strand of RNA:

CCC CUC AAU

the amino acids are

Proline-Leucine-Asparagine

Proline is unchanged and asparagine is unchanged

Had to look for the missing options and here is my answer.

The one that gives the best description of the most common way how material is added to the continental shelf is this: "Deposition of continental sediments". This deposition includes biological, physical, and even chemical processes that occurred in a span of time. Hope this helps.