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15
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Which Era did sea invertebrates evolve and make up majority of the animal population?
Paleozoic
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monster
Reset all scores!
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magnet
Take 10 points!
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rocket
Go to first place!
Okay!
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baam
Lose 20 points!
Oops!
15
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How did the Cenozoic Era end?
Era isn't over
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How did the Paleozoic Era end?
climate change
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A record of the geologic events and life forms in Earth’s history
geologic time scale
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One of the three long units of geologic time
eras
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Known as the “middle era”
Mesozoic
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One of the units of geologic time into which eras are divided
periods
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Animal that is warm blooded, has fur or hair and produces milk through glands for their young
mammal
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seesaw
Swap points!
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shark
Other team loses 25 points!
Okay!
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fairy
Take points!
5
10
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20
25
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banana
Go to last place!
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thief
Give points!
5
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25
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fairy
Take points!
5
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25
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rocket
Go to first place!
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lifesaver
Give 10 points!
Oops!
15
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Animals that have a backbone
vertebrate
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Which Era did mammals and flowers appear?
Mesozoic
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Animals that do not have a backbone
invertebrate
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heart
Other team wins 15 points!
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fairy
Take points!
5
10
15
20
25
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
15
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Period of time that marks the beginning of Earth’s history
Precambrian Time
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