By the turn of the century, women held three quarters of which type of jobs in the united states?

The correct answer is Low-level office jobs.
 By the early 1900s, women held most of the low-level office jobs. They served as stenographers, typists, and clerks. Secretarial work, which had been previously held by young men who expected to rise through the ranks, was now mostly done by women.

4. great depression

It turns into vapor and goes into the atmosphere