<span>the answer is physical boundary</span>
The supplement of an angle that measures 80 degrees is called an acute angle
Geography is called the mother of all sciences due to its links and influences on a range of other scientific fields including biology, math, anthropology, geology, astronomy and chemistry
A two-column proof contains a table with a logical series
of statements and reasons that reach a conclusion. It is commonly present
in geometry. Two column proofs always have two columns: statements and reasons.
The other choices don’t fit in the definition of two column proof.
The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight.