ch.7 key terms Flashcards

(12 cards)

1
Q

swap

A

wetland dominated by woody plants

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2
Q

benthic zone

A

threat against marine organisms

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3
Q

dams

A

limestone ridges created by small animals

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4
Q

decomposers

A

organisms that breake down dead organisms

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5
Q

littoral zone

A

aquatic zone found near the shore

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6
Q

eutrophication

A

increase of nutrients in an aquatic ecosystem

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7
Q

overfishing

A

a threat against a river ecosystem

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8
Q

salinity

A

amount of dissolved salt in a body of water

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9
Q

runoff

A

precipitation that can carry pollutants into aquatic ecosystems

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10
Q

marsh

A

wetland dominated by non-woody plants

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11
Q

coral reefs

A

located near the bottom of a pond or lake

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12
Q

estuary

A

area where fresh water mixes with salt water

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