Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
Ex: cutting a paper, gaining weight, cutting hair
Answer:
a
Explanation:
Each oxygen molecule has 2 hydrogen molecules
Answer:
una ma parra quen est a qui 23^5(-8)
Explanation:
What is your question I can answer it
I think that answer you are looking for is "The Nucleus" because DNA contains genetic material but the Nucleus directs the cell.