Question

select the abyssal zone 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:
● very deep water at the bottom of the ocean
● no sunlight
● organisms that crawl or stick to the ground
this ecosystem has:
● shallow, salty water that is close to shore
● bright sunlight
● many different types of organisms

Explanation:

The abyssal zone is located at the bottom of the ocean with very deep water. It has no sunlight as sunlight cannot penetrate to such depths. The organisms here have adapted to crawl or stick to the ground due to the lack of light and specific environmental conditions. The first option describes an estuary (mix of fresh and salt - water) and the third option describes a shallow coastal marine ecosystem (shallow water, bright sunlight).

Answer:

The second ecosystem (very deep water at the bottom of the ocean, no sunlight, organisms that crawl or stick to the ground) is the abyssal zone ecosystem.