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materials undergo changes due to oxygen and heat my chosen word is---------- i know that i know------- first i know------- finally i know----- now you know something i know-----​

Sagot :

Answer:

I don't know what you know but i want to know what you knew because knowing something is better than not knowing rather than i knew nothing but dont wanna know something but i think the answer is physical change or chemical change. It is up to you goodluck.