sort by best latest
that is an excellent question, and I am going to have to pass to a higher authority, because, I do not know. It is rare for a man to say that but, I honestly do not know.
You can help the HubPages community highlight top quality content by ranking this answer up or down.
As long as it is sunlight coming through your windows it is producing Vitamin D.
Copyright © 2017 HubPages Inc. and respective owners. Other product and company names shown may be trademarks of their respective owners. HubPages® is a registered Service Mark of HubPages, Inc. HubPages and Hubbers (authors) may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others.
Copyright © 2017 HubPages Inc. and respective owners.