Itried by writing i don't get almost none of them fit in the boxes but it might not have all the words written down, can i get ?

Which system revise and send electrical signals throughout the body

What is usually (but not always) related to the metabolic processes of living organisms in its organic 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