Which of the following trees (red maple, sugar maple, black maple)
showed a statistically significant
difference in Mean diameter when
exposed to full sun vs. part sun?
How do you know?

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