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The Burgess Shale preserves a remarkable fossil record of: a. marine life during initial diversification of animals in the Cambrian Period, 505 million years ago. b. the tracks of dinosaurs walking on land. delicate flowers and mushrooms from the early invasion of land plants. c. molecular evidence of bacteria and other organisms. d. plants, insects, and mammals around 50 million years ago, when the age of mammals began.

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Answer:

The answer is A.

Explanation:

The Burgess Shale that is given as an example in the question is located in British Columbia in Canada and contains fossils of organisms that were able to preserved to show the existence of organisms which had soft bodies approximately 505-510 million years ago, during the cambrian period.

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