Users practiced this speaking topic

Users	Post date	Rates	Contents
visa0809	Sun, 12/08/2013 - 17:49	77	view
poons	Fri, 01/31/2014 - 14:08	80	view
nishith	Thu, 01/30/2014 - 13:51	70	view

Topic title: using the example from the talk ,explain why elephants are consider a keystone species.

Topic category: TOEFL speaking