It was observed off the Canadian Pacific coast that gray whales spend long periods of time at a depth of 60 meters under water. What hydrostatic pressure do these animals withstand at that depth?

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.