The most abundant element on Earth is oxygen, but the most abundant element in the entire universe is hydrogen. On Earth, oxygen makes up approximately 47 percent of the Earth's mass and is found both in Earth's atmosphere and crust. Continue Reading.
The definition of flexible is someone or something that bends easily, is easily persuaded or can be changed easily. 1  An example of flexible is a yoga expert. 2  An example of flexible is a work schedule that allows work to be done at any time during the day.
Flexibility is the range of motion possible around a specific joint or series of articulations. Flexibility is specific to a given joint or movement. A person may not be able to function normally if a joint lacks normal movement. The ability to move a joint through an adequate range of movement is important for daily activities in general as well a sports performance. For example, a sprinter may be handicapped by tight, inelastic hamstring muscles since the ability to flex the hip joint will be limited, thus shortening stride length.