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カテゴリー全て - materials - elements - rubber - manufacturing

によって mack1520 mack1520 3年前.

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Mechanical pencil

Mechanical pencil

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Social Inequality

Social Inequality

H HEMDEV H HEMDEVにより

Plastic Water Bottles

Plastic water bottles are cheap and convenient products, but their production and waste have detrimental environmental costs.

Plastic Water Bottles Plastic water bottles are cheap and convenient products, but their production and waste have detrimental environmental costs.

Sabeh Ayoun Abdul Rahmanにより

Man and his impact on the environment

Man and his impact on the environment

Mark Hengにより

Elements, Compunds & Mixtures

Elements, Compunds & Mixtures

Trudy Kwekにより

Mechanical pencil

Electricity

Clay

Water

Alum

Flour

Graphite

Chemicals

Natural Graphite

Metal

Iron

Carbon

Rubber

Rubber Tree

Latex

plastic

Crude oil

Salt

Cellulose

Natural gas

Coal