What is ostia?? pliz help I'll give brainliest​

an opening into a vessel or cavity of the body.

An ostium (plural ostia) in anatomy is a small opening or orifice.ostia (os'tē-ŭm, -ă) [TA] Small opening, especially one of entrance into a hollow organ or canal.

Explanation:

Mark as Brainliest plz :)

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

i think the answer is c hope this