When all was said and done, Barack Obama and Mitt Romney, the two major party candidates for president in 2012, spent close to $1.12 billion -- not counting the millions more spent by the parties and outside groups. Overall, the presidential race cost more than $2.6 billion in that cycle. 2012 Presidential Race. When all was said and done, Barack Obama and Mitt Romney, the two major party candidates for president in 2012, spent close to $1.12 billion -- not counting the millions more spent by the parties and outside groups. Overall, the presidential race cost more than $2.6 billion in that cycle. Fundraising.
Best Answer: Epithelial tissue has 4 functions: protection, absorption, secretion, stimulation. Protection is reflected in the fact that epithelial cells are closely packed.
Epithelial tissue covers the whole surface of the body and lines the inside of tube and hollow organs. It is made up of cells closely packed and ranged in one or more layers.It provide protections, regulates exchange, transport, secrete, the cells touch, act as barrier, ex: lungs, intestine, kidney, exocrine gland, skin, trachea, lining blood vessel. Epithelial tissues are tightly packed sheets of cells.pithelial tissue covers the whole surface of the body and lines the inside of tube and hollow organs. It is made up of cells closely packed and ranged in one or more layers.