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15
×
___ are aquatic ecosystems that have a thin layer of water covering soil that is wet most of the time.
Wetlands
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×
boom
Lose 50 points!
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×
star
Double points!
Okay!
×
rocket
Go to first place!
Okay!
×
banana
Go to last place!
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15
×
Ponds and lakes contain freshwater that is not flowing ___.
Downhill
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15
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Important ___ factors in aquatic ecosystems include temperature, sunlight, and dissolved oxygen gas.
Abiotic
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15
×
___ include several types of ecosystems, including continental shelves and intertidal zones.
Coastal oceans
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15
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Rivers are ___, deeper, and flow more ___ than streams.
Larger, slowly
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15
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___ are regions along coastlines where streams or rivers flow into a body of salt water.
Estuaries
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15
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___ of estuaries varies, depending on rainfall, the amount of freshwater flowing from land, and the amount of salt water pushed in by tides.
Salinity
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15
×
There are four types of water, or ___, ecosystems: freshwater, wetland, estuary, and ocean.
Aquatic
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15
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___ plants at dams on rivers use the energy in flowing water to generate electricity.
Hydroelectric
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15
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Soil that washes into a river from streams or nearby land can add ___ to the water.
Nutrients
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15
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Most coral reefs form in shallow ___ oceans.
Tropical
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lifesaver
Give 25 points!
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seesaw
Swap points!
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fairy
Take points!
5
10
15
20
25
×
lifesaver
Give 10 points!
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boom
Lose 50 points!
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seesaw
Swap points!
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rocket
Go to first place!
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×
lifesaver
Give 20 points!
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15
×
Water in saltwater ecosystems has high ___ compared to water in freshwater ecosystems.
Salinity
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×
boom
Lose 50 points!
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×
magnet
Take 20 points!
Okay!
×
rocket
Go to first place!
Okay!
×
lifesaver
Give 20 points!
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×
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