How can finding out that a hypothesis is not true be useful for a scientist

How are viruses and bacteria different?

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

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids