Which of the following organs forms a barrier between an animal and its external environment? by Sunday | Jan 20 | Agricultural Science WAEC | 0 comments A. Urinary bladder B. Stomach C. Lung D. Skin Correct Answer: Option B B. Stomach Users Also Read These:A Crocodile's tail was three times as long as its…SS1 Animal Husbandry Lesson Note on External…Which of the following will NOT be a barrier to…Which of the following organs of the alimentary…Which of the following organs of the United Nations…