Saturday, August 11, 2012

Shells.

P7101643.ORF

-covering of turtle or crab: the hard protective outer covering of turtles, crabs, and other mollusks and crustaceans, or the calcium-based material this covering is made of. 

-covering of insect's body: the hard outer covering exoskeleton of an insect's body 

-covering of egg: the hard or tough protective outer covering of the eggs of birds, reptiles, and a few mammals

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