What did early scientists assume that the polar caps had in common?

In a closed or isolated system , matter can not be created or destroyed. it can change forms but is conserved true or false

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

Me as soon as possible! me as soon as possible!