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25.06.2019 •
Biology
How long ago did invertebrates become common on earth? 1.6 million years ago 132 million years ago 410 million years ago 520 million years ago
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Ответ:
520 million years ago
Ответ:
The correct answer is option D, 520 Million Years Ago
Reason -
The first invertebrates occurred in the oceans in the form of soft body animals which are covered by shell. These organisms appeared in the water bodies some 5 billion years ago (500 million years ago). The other species include the arthopods (insects), mollusk(snails and octopus) , annelids (Earthworm and leeches) etc. also evolved some 490 million years ago.
Ответ:
Darwin’s Finches
Explanation: