Which choice best describes the function of the haversian (central) canals within bone?

Why do farmer's kill animals in a mean way, don't farmer's have feeling's?

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.

First to answer will be the brainliest i need the answer asap