How has the earths surface changed over time

What were some benefits of the lewis and clark expedition?

What does one prolonged blast and one short blast mean?

Identify a true statement about media multiplexity. the choice of medium is primarily important in determining the strength of relationships. weak ties are uncomplicated and do not need many channels to sustain them. tie strength plays an insignificant role in determining the number of media employed by pairs. strong ties require less media than weak ties to orchestrate their varied and interdependent connection.