Original sentence: Both types of ice vary greatly in consistency according to weather conditions.Ice climbing is broadly divided into two spheres, alpine ice and water ice.Roughly follows the WI rating system with respect to its physical and technical demands
Edited sentence: A mixed climbing is when ascending involve both ice climbing and rock climbing.For the purposes of climbing ice can be broadly divided into two spheres, alpine ice and water ice.Mixed climbing has its own grading scale that roughly follows the WI rating system with respect to its physical and technical demands.Most alpine ice is generally one component of a longer routes and often less technical, have more in common with standard glacier travel, while water ice is selected largely for its technical challenge.Still technical grade is independent of ice type and both types of ice vary greatly in consistency according to weather conditions