Environmental Science
Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by the:

Release of latent heat to the atmosphere when polar ice melts
Conduction of heat through the interior of the earth
Circulation of heat by the atmosphere and oceans
The insulating properties of snow
Concentration of earth's magnetic field lines at the poles

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Environmental Science
The north-facing side of a hill in a mountainous region in the US tends to:

Grow a variety of trees that are typically observed at higher elevation
Receive less sunlight during a year than the south-facing side
All of these
Be a better location for a ski run than the south-facing side
Have snow on the ground for a longer period of time in winter compared to the south-facing side

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Environmental Science
The earth is tilted at an angle of 23.5o with respect to the plane of its orbit around the sun. If the amount of tilt were increased to 40o, we would expect in middle latitudes:

Cooler summers and colder winters than at present
No appreciable change from present conditions
Hotter summers and milder winters than at present
Cooler summers and milder winters than at present
Hotter summers and colder winters than at present

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