Would hair be considered class or individual evidence

What is the difference between a joint and a fault? a)a joint is formed by confining pressure. b)a joint is formed by differential stress but a fault is not. c)a fault is formed by tension but a joint is formed by compression. d)a fault displaces the rocks on one side relative to another.

How does alcoholics anonymous people deal with alcoholism? a. it holds meetings where alcoholics and their family members can gather and discuss how alcoholism affects their lives. b. it encourages alcoholics to commit themselves to sobriety by sharing their past experiences and future goals, c. it focuses on alcoholism as a physical disease, instead of a mental problem that can be cured with the right treatment.

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4