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.
Stratified epitheliaâs main function is protection. Stratified squamous epithelium is composed of several layers with the cells on the free surface being squamous-shaped and the underlying cells being cuboidal or columnar in shape.ntroduction to Tissue. Tissues are groups of cells that are similar in structure and function. There are four primary tissue types: epithelial (covering), connective (support), nervous (control), and muscular (movement).