How different are the swimming strategy used by osteichthyes and chondrichthyes

Which is one example of a phenotypic change that is not genetic

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?