Why are metamorphic rocks formed by contact metamorphism usually not dense or resistant?

Astudy group should stay around 3-6 people. true or false

Based on the narrator's comments about living with the widow douglas, the reader can infer that a) the narrator doesn't care much for civilization and its strict rules. b) the narrator admires and wants to become more civilized and refined. c) the narrator is extremely religious and of high moral standing. d) the narrator desires to become a productive member of society.

Which food would provide you with the most calcium?