Question

The Baltic Sea has very low dissolved oxygen content. The part of the sea where dissolved oxygen is almost absent is an example of a(n) condition.

Answer 1

Dissolved oxygen refers to the level of free, non-compound oxygen present in water or other liquids. It is an important parameter in assessing water quality because of its influence on the organisms living within a body of water. In limnology (the study of lakes), dissolved oxygen is an essential factor second only to water itself ¹.  A dissolved oxygen level that is too high or too low can harm aquatic life and affect water quality.