Please I need help :(

Synovial fluid serves as a lubricant to prevent friction between two parts that move on each other such as in the case of and bones.

Claustrophobia is an example of a(n)

What is difference between an epidemic and a pandemic? a) an epidemic is a disease; a pandemic is a treatment.b) an epidemic is restricted to a local region; a pandemic is global.c) an epidemic has low mortality; a pandemic has higher mortality.d) an epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.