What does the biodiversity on earth indicate about its organisms?
a)they share many common structures and functions.
b)they are adapted to live in a variety of environments.
c)they have not changed over the course of earth’s history.
d)they cannot tolerate extreme environments.

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.

it is a learned trait

explanation: