É possível diferenciar os seres vivos dos não vivos, apenas observando o ambiente

Me with these questions if you’re it sure don’t answer

This is so important ugh its 25 points

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