Which common online presentation medium do people use to present their own articles? A. news portal
B. company website
C. photo-sharing website
D. weblog

Communication is the exchange of information. true false

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names

Fall protection, confined space entry procedures, controlled noise levels, and protection from chemical hazards are some of the things that contribute to a safe what