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15
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Does the image depict a normal year or an El Nino year? How can you tell?
El Nino - warm water has built up in the east of the Pacific Ocean
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15
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Why is upwelling important for fish populations?
cycles nutrients; speeds up photosynthesis; provides energy for food chain
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15
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Describe how an El Nino event can decrease the number of fish on the Pacific Coast of South America.
trade winds weaken; warm surface water moves to east Pacific Ocean; upwelling weakens; less nutrients from deep sea; to be used in photosynthesis
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15
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Name the ocean.
the Pacific Ocean
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15
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Name two methods for preventing oil spills.
international treaties; monitoring equipment; GPS tracking; double-hulled oil tankers; ban on carrying oil in front of ship
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15
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Why is prawn fishing associated with large numbers of bycatch?
small mesh in nets catches a large number of other species
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lifesaver
Give 25 points!
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star
Double points!
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shark
Other team loses 25 points!
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lifesaver
Give 20 points!
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heart
Other team wins 20 points!
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seesaw
Swap points!
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rocket
Go to first place!
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banana
Go to last place!
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monster
Reset all scores!
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gold
Win 50 points!
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shark
Other team loses 10 points!
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thief
Give points!
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25
15
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Name four environmental impacts of mining.
visual pollution; loss of habitat; air pollution; noise pollution; water pollution; traffic; land pollution
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15
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Describe how offshore oil extraction can lead to oil spills.
Describe how offshore oil extraction can lead to oil spills.
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15
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Name four components of soil.
minerals / inorganic particles; organic matter; water; air
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heart
Other team wins 25 points!
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seesaw
Swap points!
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rocket
Go to first place!
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baam
Lose 20 points!
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15
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Name five strategies for preventing overfishing.
aquaculture; net size, mesh size and shape; pole and line fishing; quotas; closed seasons; MPAs; conservation laws; international agreements
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15
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Name the rock.
limestone
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15
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What is the vector for malaria?
the female (Anopheles) mosquito
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