Matter in an ecosystem is
a. always decreasing
b. always increasing
c. recycled and reused
d. part of an open system

The answer is c.

Explanation: Matter in an ecosystem is recycled and reused.

Ecosystem encompasses all living things that is plants, animals and organisms in an area that interact with each other and their environment such as soil, weather, sun and so on.

Matter is described as anything that has weight and can occupy space.

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.

the answer is sex-linked recessive.