Which important event in earth’s history occurred during the jurassic period? the first birds emerged on earth. mammals were in search of food. animals with shells emerged on earth treelike ferns first began to grow and populate.

it is A. The first birds emerged on Earth.

the correct answer >>>>    The first birds emerged on Earth The emergence of birds and giant reptiles by land and sea

hello,

  i would that it was because no matter how hard people worked everyone would be paid the same, witch it was a that the russian to rule.

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