Water Ecosystems Multiple Choice Test

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Water Ecosystems Multiple Choice Test

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_____________ are organisms that live in the deepest part of a body of water.

Creatures that drift freely in the water are called ______________________.

The __________________ is a place where organisms are covered and uncovered daily by the waters of changing tides.

The shallow water in the standing-water ecosystem is the ______________.

______________________________ are the larger, active swimmers in a body of water.

Lakes and ponds are examples of ___________________ water ecosystems.

Rivers and streams are an example of _____________________ water ecosystems.

The boundary where fresh water feeds into salt water is an ________________________.

Organisms of the ocean’s (saltwater) _____ zone must be adapted to the rise and fall of .

Sharks, squid, and octopi live in the upper part of the ocean’s _______________ zone (few animals live in the lower part of this zone).

Organisms in water ecosystems are classified as plankton that float in water; that are large, free swimmers; and _____ that live in the deepest part of the water.

Freshwater ecosystems are divided into __________________ bodies, standing water bodies, and wetlands ecosystems.

Organisms such as kelp, fish, and whales live in the ocean’s __________________________ zone.

In general, more organisms live in the ____________________ layers of water.

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