I want to know the answer to the following question:
On estimate how many megatonnes of pesticides were used between 2006 and 2007?
All the background I'm provided with is that "In 2006 and 2007, the world used approximately 2.4 megatonnes (5.3×109 lb) of pesticides, with herbicides constituting the biggest part of the world pesticide use at 40%, followed by insecticides (17%) and fungicides (10%).". Is that enough to answer the question?