Northern Canada is less populated than southern Canada because
A.
it has a harsher climate.
B.
it lacks natural resources.
C.
it lacks inland waterways.
D.
it has a mountainous terrain.
A. it has a harsher climate.
The harsh climate in northern Canada, with long cold winters and sparse vegetation, makes it less desirable for human habitation compared to the milder climate in southern Canada. This harsh climate is a major factor contributing to the lower population density in northern Canada.