Groundwater is desirable for which of the following reasons?
a. it is often very pure.
b. it is cooled naturally underground.
c. it is easier to extract than surface water.
d. it is more easily replenished than surface water.

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?