Flammmability is a chemical change because it changes the composition of the object. the product is very different from the rectant.
Hello, to answer your question. It is because all machines require a fuel or source to power it making it imperfect for using some source that may not be renewable.
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A watering the plant. Plants wilt or droop when there’s not enough water because it helps reduce the amount of a surface area
Anaphase 1 is when centromeres divide