Aquatic Ecosystems Content Practice B 1. 2.

Name
Date
Class
C22L2
Content Practice B
LESSON 2
Aquatic Ecosystems
Directions: On each line, write the term that correctly completes each sentence.
1. Aquatic ecosystems are ecosystems that are mostly
.
2. Important abiotic factors in aquatic ecosystems include temperature, sunlight, and
gas dissolved in water.
3. Salinity is the amount of
4.
dissolved in water.
ecosystems, such as rivers and ponds, are aquatic
ecosystems that have low salinity.
5. Wetlands are aquatic ecosystems that have a thin layer of
covering
that is wet most of the time.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
6. Regions along coastlines where streams or rivers flow into a body of salt water are
called
.
7. One type of ocean ecosystem is the
ocean, which has high
salinity.
8. The intertidal zone is a coastal ocean ecosystem that is on the ocean shore between the
and the
.
9. A coral
is a coastal ecosystem that is an underwater
structure made from skeletons of tiny, soft-bodied animals.
10. Oceans and estuaries are two aquatic ecosystems that are
ecosystems.
11. Wetlands can be
ecosystems or
ecosystems.
Biomes and Ecosystems
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