I need to know what is the answer for number 6 and 7 and that’s all

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

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Which characteristics must an object possess in order to be considered alive?