What are the Plants with round stem?

In a mapping diagram how many ordered pairs are there for every arrow? How expensive is gene eye therapy? Do freezing forms a new substance? How can people get rid of snow? When Mt Hallasan last erupt? Seasonal changes in wind direction associated with large landmasses and adjacent water bodies are called? What is oxygen packing density? What kind of plants are cycads? What prayer do you need to get rid of the enemies? Can prions affect a prion? What materials in which solid liquid and gas stay together? How close did Shackleton ever get to the pole? What bends light the most gas solid liquid or water? What makes helium float? Why are you using condenser in rankine cycle? High ozone pollution levels are most likely to occur during? Is petroleum a renewable resource, or is it a finite source that will eventually run out? How are plants growing so well beneficial to the buyer? What makes an orbit elliptical? What did Werner Heisenberg do to expand our knowledge about atoms?