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The material world.
We exist as a part of the material world.
carcinogen
This food may contain carcinogens.
chemical
This reaction occurs through a chemical process.
a chemist
He is an excellent chemist who made many discoveries.
petrochemistry
He is an expert in petrochemistry.
chemical equation
It's difficult to decipher this chemical equation.
Understanding chemical equations is difficult.
chemical analysis
He is an expert in chemical analysis.
chemical fertilizer
We are growing vegetables without using chemical fertilizers.
(chemistry) chemical element
Oxygen, which is one of the chemical elements, is necessary for us to breathe.
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