Answer:
Muscle cramps are caused by the inability of myosin fibers to break free from the actin filaments during contraction, resulting in a prolonged contraction. A lack of ATP would obviously produce cramping, as myosin requires ATP to become free from actin.
Answer:
A state of not happy, not in the mood for anything at all just being down
Answer:
establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters.
