Answer: Depression really has profound effects on the immune system. Depression can cause increases in a variety of stress hormones such as cortisol and adrenaline and various other inflammatory substance such as interleukin-6.
There are 43,560 square feet in a acre; this is 4,840 square yards. You can find a conversion calculator at http://www.unitconversion.org/area/acres-to-square-foots-conversion.html Originally, the size of an acre was approximately the amount of land an ox could plow in a day. Now, I donât know about you, but that approximation means virtually nothing to me.
A square foot is a unit of area in both US Customary Units as well as the Imperial System. The symbol for square foot is ft2 or sq ft. There are 43,560 square feet in an acre. A square foot is calculated as the area of a square that has 1 foot on each side.