Respuesta :

Answer:

the fourth picture

the red rectangle

is the answer

Explanation:

Tissues are groups of cells working together to preform a common function

hope this helped! :D

Answer:

The first picture of the heart

Explanation:

Cardiac muscle. Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscles, with the other two being skeletal and smooth muscles. It is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart.

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