Subject: How do we keep germs alive in our petri dishes?

Hello, and thank-you for your help!!  We have successfully cultivated 
germs in petri dishes using the nutrient agar.  We have had tons of fun, 
and have won 1st place in our science fair.  However, we need your help!  
We are to go on to the City Finals on March 3rd.  Our germs have been 
growing since January 24th, and are startng to diminish.  We want to keep 
them alive for the finals.  Is there any way to do this? We're thinking of 
wrappin them up and storing them in the refrigerator.  Do you have any 
advice? We would appreciate it greatly!  Thank-you very much!!

Re: How do we keep germs alive in our petri dishes?