Question

select the estuary ecosystem.
this ecosystem has:

• a mix of fresh and salty water
• muddy soil that is rich in nutrients
• many different types of organisms

this ecosystem has:

• land that is covered with water for most of the year
• many trees and shrubs
• 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:

An estuary ecosystem is characterized by a mix of fresh and salty water (from rivers and the ocean), muddy nutrient - rich soil, and a diverse range of organisms. The first option matches these key features. The second option describes a wetland (like a swamp or marsh) with land covered in water and many trees/shrubs. The third option describes a deep - ocean benthic ecosystem with no sunlight and organisms adapted to the deep - sea floor.

Answer:

The first ecosystem (with a mix of fresh and salty water, muddy soil rich in nutrients, and many different types of organisms) is the estuary ecosystem.