There are 500 sheets of printing paper in a pack. Juan notes that the thickness of 500 sheets is 1.3 inches. The thickness, in inches, of a single sheet is given by the expression

A)1.3 divided by 500
B)1.3+500
C)500x1.3
D)500divided by 1.3

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