1 + 1=2, 2+3=5, 5+5=10, 10+7=17, 17+9=26, 26+11=37, 37+13=50, 50+15=65..... and so on. you just add odd numbers to the next pattern. Hope this helped.
Convergent boundaries form strong earthquakes, as well as volcanic mountains or islands, when the sinking oceanic plate melts. The third type is transform boundaries, or boundaries where plates slide past each other, forming strong earthquakes
Continental Rifts are called Continental Plate or Divergent Boundary or Convergent Boundary or Continental Drift.
Hoped I helped:D
C) gravity because gravity compresses the start into the most compact shape possible