Cells
organ
An organ
an organ
An organ!
organ
but
An Organ.
An organ is a structure composed of one type of tissues that do one job. For example, the smooth heart muscle cannot do the job of the striated thigh muscle. Specialized tissues that make up blood vessels and valves in the blood vessels could not do the job of the smooth muscles in the intestines.
Hardwork
If your looking for excuses to call into work - it's time you start looking for a new job. In this day and time you lucky just to have a job!
Cells working together to perform the same job form tissues. Tissues are groups of cells that work together to carry out specific functions in the body. Examples of tissues include muscle tissue and nerve tissue.
it is very progressed work