BioLOGY HELP NEEDED PRONTO!!!!!!!!!!!?

[v_feldman]

A new antibiotic was being tested for its effectiveness against pneumonia. Researchers growing the disease-causing bacteria in Petri dishes added 1 mL of an antibiotic solution to the Petri dishes. 2 different concentrations of solution were tested. Solution 1 contained more antibiotic and solution 2 contained less. The numbers of bacterial colonies were counted each day for 2 weeks after treatments with the antibiotic. After 2 weeks, researchers decided that solution 2 was not effective but solution 1 was effective in destroying bacteria.

1) How did the measurements lead the scientists to this conclusion?
2) If solution 1 is found to be effective but too strong to be considered safe, what further study might be conducted to develop a safe, effective solution?


If anyone can help, that would be AWESOME!! thank you sooooo much!!