The extraction of dna from saliva would be done by a a.)serologist b.)bioinformatics engineer c.)anthropologist d.)biochemist e.)forensic technician

B. Bioinformatics Engineer

serologist and forensic technician are wrong. its biochemist

Explanation:

just did the quiz and it says it in the lesson :

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.