What is the meaning of hemisphere

a half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles.

Explanation:

a hemisphere is half of the earth

Explanation:

this may or may not be correct but. a hemisphere usually means divided into northern and southern halves by the equator

answer; i believe the correct answer is (the willamete valley);