Weathering. Weathering is the alteration and breakdown of rock minerals and rock masses when they are exposed to the atmosphere. Weathering processes occur in situ, that is, in the same place, with no major movement of rock materials involved.
Lawful action, such as an agreement consciously agreed to by two or more entities, establishing lawful accountability. For example, an apartment lease legally binds the lessor and the lessee. An illegal action, such as forcing, tricking, or coercing a person into an agreement, is not legally binding.
Legal can mean a variety of things depending on context, a legal obligation means you are legally obligated to perform a certain action. Legally can be used to describe the legal implications of something. The legal system, describes a system in which laws are described. Lawful.