Which of the following questions can use science as a method of inquiry? when is creating a new vaccine appropriate? is country music the best or the worst type of music? do ghosts exist? how did the hole in the ozone layer form?

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2