Reduction of gene flow. However, speciation might also happen in a population with no specific extrinsic barrier to gene flow. Imagine a situation in which a population extends over a broad geographic range, and mating throughout the population is not random.
The Internal Revenue Service places restrictions on how far back you can amend your tax return, regardless of whether you owed tax or received a refund. Filers must use Form 1040X to amend a return and should only file an amendment to report certain changes. You have three years from the due date of the original return or two years from when you paid tax owing to submit an amended return. A pen next to an income tax form.
Report Abuse. It all depends on how far back the refund is from and how much it is for. Usually it can take a few months but could take a lot longer. If it is a small amount then they usually just adjust your tax code and give it back to you that way. have asked for a tax refund almost 3 months ago. HM Revenue & Customs sent me a form to fill in (which I did and returned quickly) and 2 letters asking for more information and documents (I also replied promptly with all the requested information even though I had already given it to them). I am now waiting.