What three cities form the global centers of economic activity?

What is the function of the organelle labeled a in the diagram?

During the decline of the harappan civilization, which group came to power in the indus valley

Typically, passing a dual enrollment course in english would earn a student: a. weighted credit on college transcripts. b. both high school and college english credit. c. high school social studies credit. d. credit for two high school english classes