Answer:
Antibiotics killed the bacteria that cause infection but they can also kill beneficial bacteria . thus Ms ABC developed a yeast infection and diarrhea after course of antibiotics because antibiotics distrub natural balance of beneficial bacteria in her intestine.
That would be an ionic bond. Which is an attraction between a cation and an anion.
I believe the best answer would be A: Community. This is because all those living things and the pond play a part for each other and in doing so they make a community.
Ch3cooh is the component tyf