Question

select the marsh ecosystem. this ecosystem has: water that is low in salt water that stays mostly still more oxygen near the surface than at the bottom this ecosystem has: land that is covered with water for most of the year many grasses and few trees soil that is rich in nutrients this ecosystem has: very deep water at the bottom of the ocean no sunlight organisms that crawl or stick to the ground

Explanation:

A marsh ecosystem is a wetland ecosystem. It is characterized by land covered with water for most of the year, having many grasses and few trees, and soil rich in nutrients. The first option describes a lake - like ecosystem (water low in salt, still water, oxygen gradient). The third option describes a deep - ocean ecosystem (deep water, no sunlight). The second option matches the characteristics of a marsh.

Answer:

The second ecosystem (land that is covered with water for most of the year, many grasses and few trees, soil that is rich in nutrients) is the marsh ecosystem.