A diagram consisting of rectangles whose are is proportional to the frequency of a variable and whose width is equal to the class interval
Answer:
Option C - Expanded tourism in cold regions
In handling a pyridinium tribromide it should be avoid
formation of dust and aerosols, then the handler should provide correct exhaust
ventilation at the places or areas where dust is formed and it is a normal
measures for preventive fire protection. And in storage it must be keep in a
tightly closed container in a dry area.
I think it is answer choice D.
