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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?

  • A. Urinary bladder
  • B. Stomach
  • C. Lung
  • D. Skin
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Correct Answer: Option 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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