negative population growth
normal pressure hydrocephalus
complexity A set or property of computational search problems. A problem is NP-hard if solving it in polynomial time would make it possible to solve all problems in class NP in polynomial time. Some NP-hard problems are also in NP (these are called “NP-complete”), some are not. If you could reduce an NP problem to […]
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1. Horticulture. nitrogen, phosphorus, and potasium.