Which of these is a tree disease spread by beetles? A. German Oak Disease B. Dutch Elm Disease C. Belgian Ash Disease D. Australian Willow Disease
Which of these is a disease caused by a lack of Vitamin B1, characterised by inflammation of the peripheral nerves with subsequent paralysis, dropsy and heart failure?
Which of these is a disease associated with the absence of nicotinic acid in the diet, characterised by dermatitis, mild diarrhea and delirium?
