Which process must occur for a muscle to be able to relax? DA
The amount of ATP in the neuromuscular junction must increase.
O B. A nerve must initiate an action potential in the muscle fiber.
O C. Myosin and actin must attach to each other.
O D.
The concentration of calcium in the myofibril must decrease.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

about 40,000,000 results (0.81 seconds)  

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.