levels of organization
cells,tissue,organisms,organ,and organ system

cells

a cell is the basic unit of life that support anything like the building blocks of life.Cells are specialized by size and shape for the job they do.Cells can be multi-cellular or singled cells  

example: Euglena ,Amoeba ,Volvox

tissue

tissue are made up of other cells to do a job.they are important because they act together to perform specific functions in the body.

examples Parenchyma, collenchyma, and sclerenchyma

organs

made up of two or more tissue to do a job like a very important one to keep you alive.a part of an organism that is typically self-contained and has a specific vital function.

examples:

liver,heart,and kidneys

organ system

often work together to do complicated tasks.is a group of organs that work together to perform one or more functions. Organs make up an organism.

examples

esophagus, stomach, and gall bladder

organisms

the sum what makes the object work.an individual animal, plant, or single-celled life form.

a bunny, a person, and a living thing

summary

each organisms the cells,tissue,organisms,organ,and organ system work together by helping one to do another job.if one stop then the rest and your body dies and so do you.they are a team that work together to help you live.