Why can insertions and deletions affect more than just the codon(s) that they directly change? Hint: Why are they called frame-shift mutations?

it would lead to upper respiratory infections and pneumonia.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

the correct answer is b