Answer:
Core.
Explanation:
The core is magnetic and is the cause of the Poles and the magnetosphere.
The answer to this would be A, because they began to spread westward once they decided to head away from the Arctic.
Answer:
Explanation:
Given
Required
Determine an equation of a perpendicular line but with the same y intercept
Open bracket
A linear equation is represented with:
Where
By comparison:
So, the slope of is m
Because the new line is perpendicular to , the relationship between their slopes is:
Where
slope of the first equation
slope of the second equation
Substitute m for 
in
Hence, the slope of the new equation is: 
From the question, we understand that they have the same y intercept.
So, the equation of the new equation is:
It protects us from harmful UV rays from the sun.
Explanation:
The western and central European section of the plain covers all of western and northern France, Belgium, The Netherlands, southern Scandinavia, northern Germany, and nearly all of Poland; from northern France and Belgium eastward it commonly is called the North European Plain.
