The phrase "are one reason behind" is correct and usable in written English.
It can be used to indicate that something is a contributing factor or cause for a particular situation or outcome.
Example: "The rising temperatures and changing weather patterns are one reason behind the increase in natural disasters we are witnessing."
Alternatives: "are a contributing factor to" or "are part of the reason for".
Capitalizing on that is one reason behind not only making the ringtones available at long last, but for doing so in a nonexclusive fashion.
The biggest domestic legal challenge to UK intelligence agencies accessing the mass data harvested by the US National Security Agency NSAA) begins on Monday, and may be one reason behind the government's decision to introduce emergency surveillance laws into parliament next week, campaigners have suggested.
This was one reason behind the title; another – declared by the author himself – was that On the Eve was published the year before the emancipation of the serfs.
That the two markets can live alongside one another without putting each other off is one reason behind Owens's steadily growing success, a popularity visibly registered in the rampant copying of his look all over the world.
This stark difference is one reason behind the surge of interest in home canning and preserving.
This usage of social media for propaganda might be one reason behind the decline of narcomantas in Mexico.
Thus, poor neonatal calf viability was proposed to be one reason behind the high percentage of stillbirth in SLB heifers.
These observations may be interpreted as that both insulin resistance and hyperglycaemia increase oxidative stress and may be one reason behind the lower TRX-1 expression in the T2D subjects.
These pension contributions are one reason why take-home pay is lagging behind overall performance of the economy.
Evidence from the education select committee last month revealed a cross-party consensus that standards of assessment have fallen, and that this is one reason why we lag behind top-performing countries.
