Coordinating shore excursions for passengers and preparing a daily activity calendar for onboard passenger activities is the responsibility of the:

Cruise director and his or her staff.

Explanation:

The cruise director is a devoted professional as well as a skillful manager whose responsibility is to carry out every activity and entertain passengers on a ship, ranging from music events to parties and more. This person is the visible face of the crew and works as the master of ceremonies, the voice for public announcements, and the attendant of receptions.

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't

answer; code of federal regulations;