What's an account? When a computer is used by many people it is usually necessary to differentiate between the users, for example, so that their private files can be kept private. This is important even if the computer can only be used by a single person at a time, as with most microcomputers. Thus, each user is given a unique username, and that name is used to log in. There's more to a user than just a name, however. An account is all the files, resources, and information belonging to one user.
They include biochemical, clastic and evaporative sedimentary rocks. Biochemical sedimentary rocks are formed from organic processes that involve living organisms producing the sediments. These living organisms can be snails and clams whose discarded calcium carbonate shells can form limestone.
Metamorphism. Meta-means ___________. Morph means ___________. Metamorphic rocks are rocks which have had their form changed. Parent Rock is the original, unaltered, unchanged rock. Parent rocks can be igneous, sedimentary or metamorphic rocks. Metamorphism occurs due to changes in temperature, pressure or chemistry.