How can humans most directly influence what happens in a river basin in a positive way? * by developing a task force for creating estuaries
by protecting soil, water, air, plants, and animals
by promoting public awareness through education
by draining swamps, wetlands, marshes, and bogs

well it should be the last one because well if those weren't clean than they might get are rivers nasty and stuff so yea

Explanation:

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.'