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.
Most kids are pretty flexible, which means that they can bend and stretch their bodies without much trouble. This kind of exercise often feels really good, like when you take a big stretch in the morning after waking up. Being flexible means you can move your arms and legs freely without feeling tightness or pain.