Select ALL the causes bioaccumulation of pollutants in aquatic organisms listed below. 1.Fertiliser in water bodies
2.Pesticides in water bodies
3.Heavy metals in water bodies
4.Pathogens in water bodies

"d.) carbon dioxide and hydrogen sulfide"

the answer would be   10%

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.'