The air density is so low in this layer of earth's atmosphere that this is the location we normally think of as the start of outer space. a) mesosphere b) stratosphere c) thermosphere d) troposphere

The answer is C because you have to know the outshell of the layers and the temperture

the answer for apex is "1 and 6"

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.'