Hydrogen is much less common as an element on Earth. Its density is so low that it long ago escaped from Earth's gravitational attraction. Hydrogen does occur on Earth in a number of compounds, however, most prominently in water. Water is the most abundant compound on Earth's surface.
easement by prescription. An easement acquired by continuous, open, and hostile use of the property for the period of time prescribed by state law. Print Cite / Link.
Easements and rights-of-way are very different things. An easement is permission to use an area of land. The property owner retains ownership of the area covered by the easement. Easements run with the land - that is, they automatically continue in force when the land is sold.