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15
×
True or False: Elements can be reduced to simpler substances with the use of special chemicals.
False
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Check
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15
×
Nitrogen in ___ is essential to passing on genetic information.
DNA
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Check
×
boom
Lose 50 points!
Oops!
×
gift
Win 20 points!
Okay!
×
gift
Win 20 points!
Okay!
×
banana
Go to last place!
Oops!
15
×
The three processes involved in the water cycle are evaporation, condensation, and ___.
Precipitation
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15
×
The path water follows as it moves from Earth through the ___ and back to Earth is called the water cycle.
Atmosphere
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Check
×
heart
Other team wins 15 points!
Oops!
×
star
Double points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
thief
Give points!
5
10
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25
15
×
___ in the soil and water fix nitrogen gas in compounds that organisms can use.
Bacteria
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15
×
Many types of ___ are used over and over again in the environment.
Matter
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15
×
The oxygen cycle involves the change from oxygen to ___ and back again.
Carbon dioxide
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15
×
When people burn fossils fuels to heat their homes or drive their cars, ___ is released into the atmosphere.
Carbon dioxide
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Check
×
banana
Go to last place!
Oops!
×
gold
Win 50 points!
Okay!
×
gift
Win 25 points!
Okay!
×
thief
Give points!
5
10
15
20
25
15
×
The way water and gases move through ecosystems and are used over and over is called a ___.
Cycle
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15
×
Some animals obtain the nitrogen they need when they eat ___ that have absorbed nitrogen compounds from the soil.
Plants
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15
×
During ___, liquid water changes into water vapor, which is a gas.
Evaporation
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15
×
___ changes back into liquid water during condensation.
Water vapor
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15
×
True or False: Nitrogen and oxygen are the two most abundant gases in the atmosphere.
True
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×
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