Rivers, canals, ponds, and reservoirs make up the freshwater ecosystem. Various kinds of living species are found in freshwater ecosystem, fishes, molluscs, etc. and even microorganisms are present in the freshwater ecosystem.
The correct option for this question is (D) All of the above.
Freshwater ecosystem cover less than 0.1% of the planet's total surface area but host over 100,000 species.
More than just fish, it is home to various worms, mollusks, crayfish and insect. The vegetation around the water shelter frogs and newts. Wetland vegetation is used by birds and mammals to nest and feed.
In freshwater ecosystem, microorganisms are present and interaction between fishes also happen, rocks and shells are also present in the bottom of the water bodies.Thus, (D) All of the above is the correct option.
To know more about freshwater ecosystem follow the given link: https://brainly.com/question/15957064
