How can motion be represented

How can an organ, such as the lungs, work for multiple body systems?

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

The sea slug that considered to be a photosyntheesizing animal