The changes to boston's harbor and land area are examples of the ability of to manipulate and change the
a. culture . . environment
b. environment . . subculture
c. popular culture . . subculture
d. architecture . . popular culture

a. culture . . . environment

Unlike marine animals such as fish, land vertebrates do not have mechanisms to excrete high salt content. Their excretory organs namely the kidneys are not designed to handle concentrated salt content. Therefore if high  salt  content is retained in the body, then osmotic imbalance in cells of land vertebrates would  occur with the cells losing water because they would be hypotonic to their immediate surrounding and eventually die.Marine fish are able to maintain osmotic balance in the sea water because they have specialized cells in their gills that actively eliminate salt and these fishes do not absorb any salt from the water they drink.