If an element has 6 protons and an atomic mass of 12, how many neutrons does it have?

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?