Answer :
Intertidal zones, neritic zones, open ocean and coral reefs aquatic ecosystems are composed of salt water. Therefore, option (A, B, C and E) are correct.
What do you mean by aquatic ecosystem?
an aquatic ecosystem is one that develops around a body of water. Amphibian biological systems contain networks of organic entities — oceanic life — that are subject to one another and on their current circumstance.
Freshwater habitats like lakes, ponds, rivers, oceans, and streams, as well as wetlands and swamps, are all part of an aquatic ecosystem. Oceans, the intertidal zone, reefs, the seabed, and other marine habitats are all examples.
Aquatic ecosystems play a variety of important roles in the environment. They recycle nutrients, purify water, reduce floods, increase and maintain streamflow, recharge ground water, provide habitat for wildlife.
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