SAN DIEGO & PERTH, Western Australia--(BUSINESS WIRE)--Two Western Australian high school students who have made discoveries key to the field of agricultural biotechnology pitched their skills against the world’s best biotechnology students and won third and forth place in the competition. The two Western Australian students are in San Diego at the BIO2008 International Convention competing in the sanofi-aventis International BioGENEius Challenge, held in conjunction with the BIO2008 convention.