Corporations must file tax returns in all U.S. jurisdictions imposing an income tax. Such returns are a self-assessment of tax. Corporate income tax is payable in advance installments, or estimated payments, at the federal level and for many states.
An ashen skin color is a result of inadequate oxygen circulation or perfusion.
Brown spots on the skin can be caused by a variety of things. Photo Credit face image by sasha from Fotolia.com. Brown spots on the skin generally do not indicate a cause for alarm. These naturally occurring features can appear as small brown blotches from exposure to ultraviolet light. Seborrheic keratoses also presents as brown spots on the skin. While they can appear alarming, these are also benign.