high levels of nutrients high levels of oxygen high levels of performance high levels of pollution high levels of potassium high levels of poverty high levels of power high levels of protection high levels of quality high levels of radiation high levels of safety high levels of security high levels of stress high levels of traffic high levels of unemployment high levels of vitamin high levels of youth unemployment to high levels high levels high level to a high level high leverage high life high lifting capacity high lift high light output high light transmission high light transmittance high lighting high light high likelihood high limit high linearity high line high liquidity high living standards high living high load capacity to high loads high load high location high long-term high lord high losses high low high lumen led high lumens high lumen high luminance high luminosity high luminous efficiency high luminous flux high luxury high machine high magnetic high magnification high maintenance costs high maintenance high maneuverability high manganese high manoeuvrability high manufacturing high margins high market share high marks high mass high mast high material costs high material high maturity high may high measurement accuracy high measurement high measuring accuracy high mechanical loads high mechanical performance high mechanical properties high mechanical resistance high mechanical stability high mechanical strength high mechanical stress high mechanical high media high medicinal value high melting point high memory high metabolic rate high metabolism high metal high migration high mileage high mineral content high minimum standards high mission high mixing high mobility high model high mode high module high modulus high moisture content high moisture resistance high moisture high moisturizing high molecular weight high molecular high molybdenum high mood high moral standards high moral values high morale high morality high moral high morbidity high mortality rate high mortality high motivation high mound high mountains high mountain high movement high museum high myopia high neckline high neck high need high net worth high net high nickel high nitrogen content high nitrogen high noise level high noise high noon high notes high note high number of applicants high number of applications high number of cases high number of casualties high number of complaints high number of deaths high number of patients high number of people high number of requests high number of users high number of victims high number of visitors high numbers high number high nutritional value high nutrition high obstacles high occupancy high occurrence high octane high officers high office high officials high oil content high oil prices high oil high on a hill high on drugs high on life high on my list high on our agenda high on the agenda high on the list high on the political agenda high one high opacity high open area high opening high operating costs high operating reliability high operating temperatures high operating high operational reliability high operational high operation high opinion high opportunity high optical performance high optical quality high optical high option high orbit high outdoor temperatures high output power high output high overhead high oxygen high pace high pain high pair high park high participation high particle high pass