At the founding, America adopted the Western concepts of civil marriage and family, in which the mother played the primary role (shared with the father) in nurturing children, with the formation of character and moral values as essential objectives.
Tundra climate, major climate type of the KÃ¶ppen classification characterized by sub-freezing mean annual temperatures, large annual temperature ranges (but not as large as in the adjacent continental subarctic climate), and moderately low precipitation.
The tundra is the world's coldest and driest biomes. The average annual temperature is -18Â° F (-28Â° C). Nights can last for weeks when the sun barely rises during some months in the winter, and the temperature can drop to -94Â° F (-70Â° C).