The immune system protects your body from sickness and germs. 2. Leukocytes are white blood cells that seek out and destroy organisms or substances that can cause disease. 3. Lymph nodes are glands that work like filters to remove germs.
The number of sets allowed per each team varies based upon the type of track and the length of the race. Each tire costs $449 each, and teams spend an average of $20,000 on tires for a single race. Tires lasts about 100 miles on a NASCAR track. They are 11.5 inches wide with a weight of 24 pounds each. Goodyear manufactures 18 different tires for NASCAR teams over an entire season.
In 2015, tires cost $493 each . That's almost $24,000-worth of rubber for a weekend requiring 12 sets. It's good to be one of those well-funded teams. Different tracks require different tire compounds . To develop the best tires for each particular race, Goodyear has to consider the setup of the cars and the layout of each race track.