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:Which of the following organs of the alimentary…A screw-jack has the distance between its successive…The barrier between maternal and foetal blood is the?A Crocodile's tail was three times as long as its…Which of the following is a major barrier to…