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.
A set of racing tires now costs about $2,000. Counting practice, qualifying and the race, thatâs a cost no team can avoid. (And to top it off, teams are required to pay the same $3.25 state and federal disposal fees for each tire that everyone else as to pay at their neighborhood tire store.)