Question

A scientist is studying a new chemical he hopes will prevent insects from eating raspberry bushes. He
sprays the chemical on a raspberry bush and places it with an unsprayed blackberry bush and some
insects in a sealed room. He observes insects eating the blackberry bush, but not the raspberry bush.
He concludes that the chemical works. This situation is an example of
(1 point)
a a controlled experiment.
b experimental bias.
c cultural bias.
d skepticism

Answer 1

b. experimental bias