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Which of the following used diffusion as the principal method of gaseous exchange?

Which of the following used diffusion as the principal method of gaseous exchange?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Lizard
  • B Grasshopper
  • C Rat
  • D Earthworm
Correct Answer: Option D
Explanation:

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