Vocabulary: » Term: » Records: » ID: 522

Click image to see larger image	Pearl necklace
Location	http://commons.wikimedia.org/wiki/Image:Golden_pearl_necklace.jpg
Observations	A golden pearl necklace.
Explanations	Oysters are important to the environment because they help filter out some of the toxins and trash in water. When something irritates the oyster's insides, it secretes a substance to coat the irritant. A pearl is then formed. Humans wear pearls as jewelry.
California Standards	Ecosystems
National Standards	Populations and ecosystems
Related NSF Exemplary Curriculum	Food and nutrition Animal studies Ecosystems Investigating ecosystems Ecosystems
Related Sets	Importance of animal products
Creative Commons License	This work is licensed under a Creative Commons Attribution 2.5 License.
Authors	N/A N/A None None
Publisher	None Jun 05 2006

This material is based upon work that was supported by the National Science Foundation under Grant No. 0127164 to California State University Fullerton. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.