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.
This enables epithelial cells to control substances that pass from one side of the cell to the other. In this way epithelia serve in absorptive, secretory, and excretory functions. 2. Single or multiple layers of cells-most epithelia form linings or coverings.These can consist of a single cohesive layer or multiple layers of cells cemented together. The location and functional needs of a site dictate what type of epithelium is present.pithelia are tissues that serve as protective layers and/or secretory components of body organs and systems. In the special senses, some epithelia act as receptors in a sensory capacity. Most epithelia possess common characteristics that contribute to their functional capabilities.