Which type of base-pair substitution seems to be the least harmful?

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

i believe it is c: genes for body color and wing size are inherited separately from each parent.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.