When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
When you light a match it is the striking of it which causes the lighting; the presence of oxygen in the room is a background condition to the lighting. But in virtue of what is the striking a cause while the presence of oxygen is a background condition?.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.