Difference between revisions of "Shell"

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Latest revision as of 19:14, July 13, 2016

See also: Shell (disambiguation)

In biology, a shell is a tough, multilayered structure secreted by the mantle. It is usually used for protection, but sometimes for body support.[1]

References

  1. ↑ Wile, Dr. Jay L. Exploring Creation With Biology. Apologia Educational Ministries, Inc. 1998