Why do the north and south poles have 6 months of winter (darkness) and 6 months of sunshine, rather than regular seasons?

Which of the following is typically not a characteristic of a foraging society? a. foraging societies are nomadic groups. b. foraging societies consist of small groups with ties based on kinship. c. individuals in foraging societies have few personal possessions. d. foraging societies have formal social and class structures

These factors threaten north americas ecosystems

Why would the composition of a meteorite resemble the earth's interior?