when you place a ball at the top of a hill and it accelerates toward the bottom
of the hill, it probably also experiences both
and
o
a. sliding friction, rolling friction
o
b. rolling friction, air resistance
o
c. sliding friction, air resistance
o
d. rolling friction, sliding friction

rolling friction, air resistance.

Explanation:I just took the test on apex

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'