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andrew11 [14]
3 years ago
14

A shell is composed of three layers? - list and describe each layer.

Geography
1 answer:
sleet_krkn [62]3 years ago
4 0

Three layers:

(uncalcified)-An outer proteinaceous periosteum,

(calcified)- a primatic layer,

(calcified)- and an inner pearly layer of nacre.

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