What begins when the exercise intensity demands ATP production at a higher rate than the energy systems can supply it? A. Lactic acid B. Muscle fatigue C. The ATP-PC system D. VO2 max

What does a daily value of 10 percent mean? a) a food package can bear the nutrient claim “light.” b) a food consists of 10 percent of a particular nutrient. c) one serving provides 10 percent of the daily amount for a particular nutrient. d) ten percent of your calories should come from a particular nutrient.