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.
PrEP, an acronym from Pre-Exposure Prophylaxis, is the use of prescription drugs by people who do not have HIV/AIDS as a strategy for the prevention of HIV/AIDS.he terms pre-exposure prophylaxis and PrEP most commonly refer to an HIV-prevention strategy where antiretrovirals are used to protect HIV-negative people from HIV infection.