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15
×
What happen when the nitrates and phosphate enter the lake?
they case rapid grow of algae
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15
×
metallic compound that can damage the nervous system is
mercury
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seesaw
Swap points!
Oops!
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gold
Win 50 points!
Okay!
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shark
Other team loses 10 points!
Okay!
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thief
Give points!
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25
15
×
Leaks of sewage into drinking water will cause the disease for human such as ..
cholera, diarrhea, dysentery, typhoid and polio
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15
×
plastic that can be broken down, or decomposed, by microorganisms is called
biodegradable plastic
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15
×
metallic compound that is supports the heath of teeth and bones is
calcium
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15
×
What is the first step in purification of water to become domestic water?
remove large insoluble object such as rocks, plastic bag and branches
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thief
Give points!
5
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15
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25
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seesaw
Swap points!
Okay!
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rocket
Go to first place!
Okay!
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lifesaver
Give 20 points!
Oops!
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boom
Lose 50 points!
Oops!
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fairy
Take points!
5
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25
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rocket
Go to first place!
Okay!
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thief
Give points!
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25
15
×
Oxygen is removed from water by
respiration in plants and animals
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15
×
How does oxygen enter the water?
by photosynthesis or diffusion from the air
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trap
No points!
Oops!
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magnet
Take 15 points!
Okay!
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fairy
Take points!
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25
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banana
Go to last place!
Oops!
15
×
The pure water is also know as ....
distilled water
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15
×
metallic compound that is needed in the production of hemoglobin is
iron
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×
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