I REALLY NEED HELP ASAP *I attached a picture but heres the question just in case!"

"The diagram below shows the structures of an animal cell. What is structure 3, and how does it help sustain life?"

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.

answer/// to address the needs of adults with mental illness and increase their ability to function;

answer biotechnology;