Achemical bond in which two ions will stay together because of the mutual attraction of their opposite charges is a

well, i believe that the answer is 2. : 3

yes, because even though a theory has a  lot of evidence to support it, it is not always true

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.