Question:
How are DVD different from CD? (2)
Author: kr leeAnswer:
1. DVD has two layers (larger storage capacity) 2. two layers join together using transperant, polycarbonate spacer and thin reflector
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kr lee![kr lee](https://lh4.googleusercontent.com/-kBbxF7rwZck/AAAAAAAAAAI/AAAAAAAAAAA/AMZuuclptIQL_y3_BFU8sGxm8SNnURRsjA/photo.jpg)