Answer:
A. elevation between the areas is different
Explanation:
-The locks have been created between the Great Lakes and the St. Lawrence River because of the elevation between the areas is different. The Great Lakes and the St Lawrence River with the Atlantic Ocean are linked by St Lawrence Seaway which is a system of locks, canals and channels. The seaway provides passage for oceangoing vessels into central North America.
Hope this helps! :)
Blazetoxic123
Consider your theme, think creatively, choose a nice mix, be selective, and order your songs carefully. Hope this helped.
Answer:
the plates move apart, causing the ocean floor to increase in size
Since the mind is put on so much stress, the body starts to get weak and it reacts by getting sick or ill. Your body and mind is not used to being put that much pressure on, so it becomes weak and it leads to illnesses.
Hope this helps! :)