BICYCLE

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GHGs

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Fuel

Transportation

Iron

Wires

Steel

Petroleum

Foam Padding

Nylon

Salt

Natural Gas

Cellulose

Plastic

Crude Oil

Iron Oxide

Silica

Hydrated Aluminum Oxide (40% to 60%)

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Trees

Rubber

BICYCLE

Chains

Brakes

Pedal

Bike Seat

Handlebar

Bike Frame

Wheel