Organisms that drift with the current and serve as a major food source for aquatic animals are known as what?

An area where fresh water from rivers mixes with salt water from the ocean is known as what?

Coastal land areas that are covered by salt water for all or part of the time are known as what?

Why do we find a lot of different organisms in estuaries?

Dense growths of mangrove trees in swampy areas that can also be found in tropical and subtropical zones are known as what?

These types of islands often run parallel to sandy shores. They help to protect the mainland and the coastal wetlands from storms and ocean waves and often provide habitat for wildlife

Invertebrates are species that lack what?

The type of organims that you find in aquatic ecosystems depends on this factor of the water.

____________________ are limestone ridges built by tiny coral animals called coral

polyps and the algae that live inside them.

___________________________ is an increase in the amount of nutrients.

Eutrophication causes a decrease in the amount of which important gas in water?

Freshwater wetlands are different from marine wetlands because_____________

A community and its abiotic factors are known as what?

Within an aquatic ecosystem, which would be considered an abiotic factor

Eventually, dead and decaying organisms reach the _______________________, the bottom of a pond or lake, which is inhabited by decomposers, insect larvae, and clams

________________ are bottom-dwellers, such as mussels, worms, and barnacles.

One of the important roles wetlands play in our ecosystem is what?