Question

is the first line of defence against a by the rival team​

Answer 1

Answer:

The first line of defence is your innate immune system. Level one of this system consists of physical barriers like your skin and the mucosal lining in your respiratory tract. The tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.

Answer 2

Answer:

it is hard I can't answer