What is a career barrier?

Should guides use oxygen tanks up Everest when guiding clients? What is the role of Emile de Becque in South Pacific? What is an incredibly rich ecosystem? What three major rivers of India in ancient and medieval times were the indus ganges and? What is the phone number of the Shell Beach Library in Shell Beach? Where is manhatten island? Where is the stator located on a 2000 heritage? Why do beavers use trees to make dams? List the 10 largest bays in the world in order? I had a root canal gone bad went and started a implant on one of my front teeth on top didn't have the money to get it finished now I have dentures and the implant is trying to come out will it? What carnivorous plants live in the amazon? Why are forest floor plants so small? Which Antebellum Navy leader earned the title Pathfinder of the Seas for his contributions to ocean? What is the compass direction of the Sahara desert? In what year was a canal across the Isthmus of Panama first considered and who had this idea? How many people fall off a ladder and get hurt in a year in Oklahoma? When you went to ocean and the day you had bumps how? What action caused the us to engage in massive military operations in the Persian gulf area in 1990-1991? What conditions make the stay at Base Camp difficult at base? Name the 3rd largest island in the Mediterranean Sea?