Lance armstrong just finished third (by about 5 minutes) in the 2009 tour de france cycling race. this was an incredible feat for the 37-year-old father of 4. first and second-place winners, alberto contador (age 27) and andy schleck (age 24), respectively, have no children. which of these three men shows the greatest evolutionary fitness?

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.

Which of the following can be assumed about the layers in areas 2 and 4

Chitin is a chemical component of the cell walls