Newcastle disease is caused by? by Sunday | Jun 9 | Agricultural Science WAEC | 0 comments A. virus B. bacterium C. protozoan D. fungus Correct Answer: Option A – virus Users Also Read These:Smut disease of cereals is caused by a?Streak disease of maize is caused by?The pox disease in livestock are caused by?Which of the following disease is caused by a bacterium?The disease caused by the bacterium Bacillus…