In what ecosystem have many organisms adapted to a changing salt content in the water? A. intertidal area
B. estuary
C. swamp
D. salt marsh

intertidal area

Explanation:

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.