Specific scientific contribution/discoveries of cell theory including dates

Explain how the political influence of african americans leaders became weaker.

What controls activities within a eukaryotic cell?

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