When people interact in an effort to receive a reward or a return for their actions, a(n) has taken place. exchange barter division of labor both b and c?

The two-factor theory of emotion was proposed by

Dominic and stacy each have a stamp collection. dominic has six fewer stamps than three times the number of stamps stacy has. dominic and stacy decide to give all of their stamps to their younger sister, mary. if stacy had s stamps, which expression represents the number of stamps that mary received? a. (3s − 18)(3s − 6) b. 2s − 18 c. 4s − 6 d. 4s − 18

'nepal have varied vegetation as climate and landforms'. justify the statement