Which of these plecas of evidence did not in the development of the theory of plate tectonics

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Find the mass in grams of 1.37x1020 particles of h3po4

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line