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as good as wool. as good as an insect's body. not as good as natural materials. better than natural materials.
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Production costs do not include the true costs of environmental impact. There axe subsidies to virgin materials. Using virgin materials can protect environment. The secondary materials are more expensiv
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Light waves are beams of light. Light waves can penetrate any materials except men' s bodies. Light waves can penetrate transparent materials. Light waves can penetrate some materials.
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