Fill in the blanks to describe the role of the ozone in the atmosphere
*the controls and distributes heat.
*the stores and distributes heat energy.
*the stores water and reflects heat energy.
*the alters the composition of the atmosphere. volcanoes erupt and expel hot gases and particles of dust and ash high into the atmosphere.
*the alters the composition of the atmosphere.

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.'