Nicole came out of the elevator in her apartment buliding. she ran to the curband held up her arm to hail a taxi. when she hopped in, she said take me to 34545th street. you infer that:

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