This ultimately prevents protein synthesis and thus inhibiting bacterial growth. As a result, caffeine temporarily prevents or relieves drowsiness, and thus maintains or restores alertness. This prevents unintentional fallthrough but allows it when desired. Therefore, by inhibiting osteoclasts, it prevents osteoporosis. Its static type system prevents unintended operations. However, his laziness frequently prevents him from effectively utilizing his intelligence. It also prevents chemical oxidation by oxygen in normal air. It also prevents damage due to monsoon floods. This prevents nerve impulses from triggering muscle contractions. This both prevents flooding and contributes to groundwater replenishment. Thus oseltamivir prevents new viral particles from being released. Penicillium also prevents bacteria from affecting the body. Plating also prevents oxidation of the lead bullet. It prevents carrier recombination at the cell surface. The ingestion of iodine prevents iodine deficiency.