If the axial tilt of earth were 35 degrees, would polar regions be habitable for human life?
Yes! On a small scale. The population in northern Norway (latitude
angle (to the vertical) of incidence of light rays, from the Sun, would
If the angle of incidence
the horizon,, for the whole day, and there will be no sunlight
for the day.
Now, this happens tor latitudes > 66.6^o N, at winter
solstice ( about Dec 21).
When the tilt increases to
In view of all these points, the answer is given.
Now, read the answer again.