a. Following figure is an image of a fossilized echinoderm. Estimate the actual diameter of the fossil.

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a. Following figure is an image of a fossilized echinoderm. Estimate the actual diameter of the fossil.

b. If a penny has an actual diameter of 0.75 inch, how many times would this fossil fit across the diameter of a penny?

1 cm Scale

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Campbell Biology

ISBN: 978-0321775658

10th edition

Authors: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson

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