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

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Bio molecules are essential to all living things. which biomolecule is “d” from the table