1. a. Centralized governments
b. Organized religions
c. Social classes
d. Specialization of labor
Which heading best completes
the partial outline?

What school are you from and what state are you from?

What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche? during an avalanche, the( 1 ) energy of the snow on the mountain is converted into ( 2 ) energy as the snow cascades down. ( 1 ) a. elastic b. kinetic c. potential d. radiant ( 2 ) a. chemical b. kinetic c. nuclear d. potential

What is the thickest layer of earth called?