Muscle tissues are made of specialized units called organs.

cells.

genes.

organelles.

here is your answer

Genes

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Muscle tissues are made of specialized units called cells.

The skeletal muscle tissue for instance; consists of elongated muscle cells which is also known as muscle fibers. It is responsible for movements of the body.

labor leaders and organizations had the power to demand it.

explanation:

workers got a five-day workweek because the bcea protects and respect the rights of the employees. labor leaders and other groups demanded it.

1775 is your answer hope this