reginacperkins reginacperkins
  • 25-10-2017
  • Biology
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Need help ASAP really quickly!!!!!!

Need help ASAP really quickly class=

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Bellacutei
Bellacutei Bellacutei
  • 25-10-2017
The answer is letter A.
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coochicans
coochicans coochicans
  • 25-10-2017
I am pretty sure it is A, because it test the environment and gathers info on what is happening alarming proper authorities (usually scientist) if it is not.
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