You need to test the hypothesis several times and record all results. Once you obtain the same results several times, I think that means its a theory
"General adaptation syndrome" is the one model among the following choices given in the question that <span>helps explain human reaction to stressful situations or things. The correct option among all the options that are given in the question is the first option or option "A". I hope that the answer has come to your help.</span>
Bromothymol blue is an indicator for weak acids and bases.It is used to observe photosynthetic acvtivities and for respiratory indication.
Blue Bromothymol indicator will turn to green then to yellow when CO2 is added.When O2 is added, no effect is noticed in the Blue Bromothymol because Oxygen doesnot affect the pH.
In a summary, the color indication follows;
- Yellow-to indicate acidic
- Green-for neutral solutions
- Blue-for alkaline solutions.
D) Lesser amounts of fresh metals would be needed.
