To warm up before a run, david begins by completing quad and hurdler's stretches. which of these accurately evaluates his choice of warm-up activities? a ) these activities are appropriate because they prepare muscles for intense movement. b)these activities are not appropriate because the muscles stretched are not warm yet. ] c) these activities are appropriate because they make the leg muscles more flexible. d)these activities are not appropriate because they stretch muscles not used in the exercise.

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return