So if humans first evolved in africa how do you think they ended up in the americas?

How has china attempted to increase its gdp since the end of the 20th

The two-factor theory of emotion was proposed by

Which of the following is true of emotions? (a) a neurologically-intact baby can show at least six distinct emotions at birth. (b) the character of emotions changes as we develop cognitively. (c) basic emotions are culturally- and developmentally-based. (d) in general, adults cannot interpret infant emotions until the infants are 10 to 12 months old.