Matter is moved through the Earth by the interaction of Earth’s systems.
true or false.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

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