translate English to French: For example, a 5% increase in UV would result in crop yield losses of about $90 million per year; a 20% increase in losses of about $400 million.
Le rendement des cultures Ç tolŽrantes È Žtait peu modiÞŽ par un accroissement de lÕintensitŽ du rayonnement UV-B, pouvant atteindre 20 % des niveaux de 1980.