Which material is soft so if someone has an impact it doesn't hurt but it is hard enough to stand on its own?

Is the tough fibrous membrane surrounding a bone. intra peri inter poly

Cultural, economic , and social changes that resulted in the migration of more people into cities - utilitarianism -industrial revolution -age of enlightenment

Vitamin d is unique in that it has a site of synthesis that is different from the location of action, so it is considered to be a click the answer you think is right. enzyme. lipase. nonessential nutrient. hormone?