Wallace Line to the west of the Philippines. Wallace's studies in Indonesia demonstrated the emerging theory of evolution, at about the same time as Joseph Dalton Hooker and Asa Gray published essays also supporting Darwin's hypothesis. Understanding of the biogeography of the region centers on the relationship of ancient sea levels to the continental shelves. Wallace's Line is visible geographically when the continental shelf contours are examined; it can be seen as a deep-water channel that marks the southeastern edge of the Sunda Shelf which links Borneo, Bali, Java, and Sumatra underwater to the mainland of southeastern Asia. Australia is likewise connected
Wallace Oliveira fellow Chelsea loanee, Bertrand Traoré; the ended in a 6-2 win for Vitesse. Wallace continued to be the first-choice right back for Vitesse until he broke his hand on 25 October 2014, during the game against NAC Breda. On 22 November 2014, Wallace returned to the starting line-up against AZ Alkmaar; the match ended in a 1-0 loss for Vitesse. On 10 April 2015, Wallace was arrested for suspicion of sexual offense, but was released later without any charges. Following this incident, Wallace returned to the first team on 24 April on the bench, and coming on for the last