The phrase "as to why certain" is correct and usable in written English.
It can be used when discussing reasons or explanations for specific situations or phenomena.
Example: "The researchers conducted a study as to why certain species thrive in urban environments while others do not."
Alternatives: "regarding the reasons why" or "concerning why certain".
While the app stores, video platforms, and Google could point you to this information, they don't really provide the context, credibility or transparency that a fellow teacher can as to why certain resources are rated highly or not.
It is still widely unknown as to why certain CGIs are more susceptible to DNA methylation as compared to others.
For decades, scientists have looked for explanations as to why certain conditions occur with age, among them memory loss, slower reaction time, insomnia and even depression.
Now scientists say they have uncovered a potential explanation as to why certain tissues of the brain are more vulnerable to Alzheimer's disease.
Prosecutors argued in court documents that statements and behaviours of some officers show bias as to why certain evidence was not gathered or kept.
William Goldstein, the president of the School Construction Authority, said a printing error had omitted crucial information from the report, including explanations as to why certain construction projects were delayed or over budget.
In the Conclusion, I take stock of rights before the Commission and speculate as to why, once certain rights are adopted by European institutions, they tend to become more extensive than in their place of origin.
There are sometimes outliers that make me uncomfortable, but they also give me pause and reflection as to why a certain evalutative comment was made.
From: The Dormitory of D.R. To: Miss Y In response to your query as to why a certain Miss X has mailed you a parcel containing my underwear, pajamas, toiletries, and prophylactics: You should not need to be reminded at this point that "stuff happens".
Even the iPhone App Store, which features user reviews and star ratings, is often loaded with comments that skew either highly positive or negative, without much indication as to why a certain user liked or disliked the app, and next to no information on the users who leave responses.
In addition, CLN3 might localize to different subcellular locations in a cell-type-specific manner, providing clues as to why only certain cell types, such as neurons, are affected by the loss of normal CLN3 function.
