Posted by ANNE, HELP!!!!! on Thursday, March 4, 2010 at 1:25pm.
Here is one place to begin:
http://www.google.com/search?hl=en&client=firefox-a&hs=KCK&rls=org.mozilla:en-US:official&ei=jTWQS_PfM5X4NdXqnaQN&sa=X&oi=spell&resnum=0&ct=result&cd=1&ved=0CAUQBSgA&q=when+is+the+Antarctic+ozone+hole+expected+to+recover+%26+how+do+we+know%3F&spell=1
Sra
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