The adaptive immune system involves three major cell types: antigen-presenting cells; T cells, which constitute immunity; and B cells, which govern immunity.

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!

Which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

Which was not a reason why canals were built in florida