Jill is 5 years old. she has been diagnosed with adhd and shows signs of learning problems. her pediatrician suggests that jill's problems could be the result of prenatal exposure to though he stresses that the link is not straightforward at this time.

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