Answer:
This question is incomplete
Explanation:
This question is incomplete, however, <u>the side chain is usually the part of an amino acid that is either hydrophilic or hydrophobic in nature</u>. When the side chain has little or no polarity (i.e they lack the ability to interact with highly polar water molecules), the amino acid exhibits hydrophobic properties. Hydrophobic (water-fearing) substances are substances that do not interact/dissolve in water.
There are four phyla or categories of fish, Hagfish, lampreys, cartilaginous and bonyfish.
