The roots of a plant: take in oxygen from the air soak up water and nutrients from the soil catch sunlight in special cells make sugar from carbon dioxide and water

The FitnessGram™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal.

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