<prompt> Translate the following text to EnglishMatokeo haya hayakuwekwa kwa sababu mbalimbali, lakini hasa kwa sababu ya utata wa kuunda mifano ya athari hizi na kutokuwa na uhakika katika kuaminika kwa kuamua athari za kuongezeka kwa kupunguza uzalishaji wa angahewa kwenye mwisho wa ikolojia.  <response>: These effects are left unquantified for a variety of reasons, but mostly because of the complexity of modeling these effects and the major uncertainties in reliably quantifying the incremental effects of atmospheric emissions reductions on ecological endpoints. 