Answer:
most at of earth s water is salt water found in oceans
Answer:
casandra was scared around others
Explanation:
in the passage i notesed that she went to her locker and started crying
If a bacterium cannot use citrate agar will not change its color (stays green). On the other hand, if bacteria have the ability to use citrate, the medium will change its color from green to blue.
This happens because citrate agar contains pH indicator such as bromothymol blue which transforms from green to blue in alkaline conditions.
