When obtaining eDNA samples in the Chicago Area Waterway System to determine the presence of bighead carp, which of the following investigative techniques is most important to ensure that bighead carp are not becoming a significantly invasive species?
A. Obtain a few samples from all locations within the system
B. Obtain many samples from all locations within the system
C. Obtain many samples only from locations closest to where humans use boats
D. Obtain a few samples from locations closet to where humans use boats
Answers: 3
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