У каких позвоночных животных наблюдается внутреннее оплодотворение?
1- акула; 2- крокодил; 3- змея; 4- лягушка; 5- голубь; 6- тритон.

  1. 2,3,5
  2. 1,2,4
  3. 4,5,6
  4. 3,4,6
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Question 108 of 140
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