reginacperkins
reginacperkins
25-10-2017
Biology
contestada
Need help ASAP really quickly!!!!!!
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Bellacutei
Bellacutei
25-10-2017
The answer is letter A.
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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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