That would be I, II, and III
I and II will cause a frame shift mutations.
II can cause horrible effects if the substituted base codes for a stop codon.
I think the answer is a because it is losing mass do to it melting not completely sure tho
Northern hemisphere : Summer because it is tilted towards the sun.
Southern Hemisphere : Winter because it is tilted away from the sun.
Answer:
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
Analytical balance is your answer