Although some Saguaro cacti never grow arms, those that grow arms  do so between the ages of 50 to 100 years. The size of this cacti  and the number of arms is due to factor â¦ s, such as soil and  rainfall. Saguaro cacti grow in the Sonoran Desert of the United  States.he saguaro cactus is the world's largest cactus species in the  world.This cactus can grow over 50 feet tall and weigh over 2,000  pounds (907.185 kilograms)! It also has a â¦ lifespan of 150 years!
Donât forget we have a detailed Registered Nurse Guide â covering everything you need to know to become a RN. In the United States the average annual salary for a Registered Nurse is currently $67,930 which breaks down as an average of $32.66 per hour, $1,306 per week and a monthly salary of $5,660.owa is the lowest paid state on mainland U.S.A. with an average RN salary of $52,540 â not so great if you live there! The large variation can in part be explained by simple supply and demand influences.
How Much Do Nurses Make â The Long Answer. According to the Bureau of Labor Statistics record for May 2015, the mean annual registered nurse salary is $67,490, which translates to $32.45 per hour. The lowest ten percentile in the field earns an average of $46,360, while the top ten percentile makes $101,630 annually.