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 cells help to protect or enclose organs. Most produce mucus or other secretions. Certain types of epithelial cells have tiny hairs called cilia, which help remove foreign substances. Epithelial cells are arranged in single, or multiple layers, depending on the organ and location.