Which of the following organs forms a barrier between an animal and its external environment?

Agricultural Science WAEC 2013

Which of the following organs forms a barrier between an animal and its external environment?

  • Urinary bladder
  • Stomach
  • Lung
  • Skin checkmark

The correct answer is: D

Explanation

The skin acts as a barrier between an animal and its external environment, protecting against pathogens, dehydration, and physical damage.

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