Where can volcanoes form?
a. where there are cracks in the crust
b. along fault lines
c. where the crust is thin and can be ruptured
d. all of the above

Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell