A laboratory set up that can be used to provide information about relationships between four plant species in the represented below.  This setup is part of the technique known as

A) electrophoresis
B) biological staining
C) dissection
D) chromatograph

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food