Compare and contrast a barrel vault and a groin vault.

Barrel Vault is the simplest type of ceiling vault, and a groin vault is the result of 2 intersecting barrels.

Hopefully this helps you ;))

Sorry i have to go ask somone else

The answer would be online media like a social media. it does refer to forms of different media content created publicly by the end users since 2005 and would cover how people use social media.hope this would be of .