Natural hazards are excluded as a cause; however human activities can indirectly affect phenomena such as floods and bush fires. This is considered to be an important topic of the 21st century due to the implications land degradation has upon agronomic productivity, the environment, and its effects on food security.
prepress. 1  of or relating to all operations other than the preparation of the press that are required in preparing a job for printing. ( 2 of a proof) pulled from a finished plate prior to or in lieu of a press proof.
preposition. n. 1. (Grammar) a word or group of words used before a noun or pronoun to relate it grammatically or semantically to some other constituent of a sentence. Abbreviation: prep. [C14: from Latin praepositiÅ a putting before, from pÅnere to place].repÂ·oÂ·siÂ·tion 1. n. Abbr. prep. A word or phrase placed typically before a substantive and indicating the relation of that substantive to a verb, an adjective, or another substantive, as English at, by, with, from, and in regard to.