Why do many desert plants have small leaves?
leaves that have a small surface area lose less water.
small leaves protect desert plants from animals that eat plants.
small leaves protect desert plants from pollution.
deserts are cold, and small leaves hold in heat.

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.