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.
An easement is a benefit based in land ownership, other than the sharing of profits, that gives someone the right of use or enjoyment of another person's land for a special purpose not inconsistent with the general property rights of the owner.