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19 votes
Muscle tissue can turn chemical

potential energy into mechanical energy
(movement) by doing what?
pumping up the muscles
jumping up and down
contracting & relaxing

2 Answers

5 votes
contracting and relaxing
User Maritime
by
4.1k points
2 votes

Answer

contracting & relaxing

Step-by-step explanation:

User Dfb
by
3.2k points