What are the three classifications of marine organisms? a: intertidal, neritic, and benthic b: plankton, nekton, and benthos c: bioluminescent, hydrothermal, and intertidal d: surface, transition, and deep ocean

The correct option is B.
Marine organisms are divided into three groups, which are: plankton, nekton and benthos. Planktons refers to those marine organisms that float, nektons refers to those that actively swim while benthos refers to those that live on or in the ocean bottom. 

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

Answer barren with few trees, in the northern hemisphere;