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The magnetizations of ocean-floor rocks alternate in direction in strips
Polymers
Large molecules made up of many repeated subunits, known for their diverse properties and uses in materials science.
Domestic Petroleum
Petroleum products that are produced, processed, and consumed within a country's borders.
Bioplastics
A type of biodegradable plastic derived from biological substances rather than petroleum, often used as an environmentally friendly alternative to traditional plastics.
Source Materials
Raw materials or substances used in the manufacturing or production process to create a final product.
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