Which statement is true about magnetic poles a) all magnets have two poles b)any magnet has only one pole c)any magnet can have two north poles d) any magnet can have two south poles

Ithink it is quantity of plants

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.