Your answer is D. Because the Earth rotating on it's axis causes Day and Night
The final coding sequence, GGGC, is the same as the original in all sequences shown. The initial coding sequence differs from ATTTGC in sequences
1 and 5
_____
Changes in the red non-coding sequences are also seen in sequences 1, 2, and 4. While these changes may not lead to a faulty protein, they may alter the way it is expressed or the effect it has. (Your question does not seem to be concerned with these changes.)
The "set-point theory" implies that each individual is genetically programmed to carry a particular amount of body weight.
The set point is the weight range in which your specific body is programmed to work. The set point theory trusts that a man's body will battle to keep up that specific weight range.
Answer:
2nd one is the most realistic of what occurs in ecosyystems