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.
3 prep If something is lying across an object or place, it is resting on it and partly covering it. (=over) She found her clothes lying across the chair..., The wind pushed his hair across his face. 4 prep Something that is across something such as a street, river, or area is on the other side of it.