Levals of organization
Cells: These are the basic building blocks of life. Cells are specialized by the shape and size and the job that they do.
Example: There shape depends on how it moves.
Example: they work together to preform speshall functions to help you live.
Example cells make other cells.
Tissues: They are made up by a collection of cells and they work together to do a specific job in the body.
Organs: Made of two or more tissue that helps do a specific job in the body.
Organ system: A collection of organs working together to do a job.
Example: respitory system
Example: Digestive system
Example: Urinary system
Organisms: Any living thing.
Population: The same organisms living in the same area.
Example: group of fish
Ecosystem: Population living together in one area.
Example: Rain forest
Each level works together because if you didn't have the cells then the next level wouldn't work and so on. But they work together by putting each level together to make the next. If any piece of the level was missing than it could not go on because of the "helping each other out" thing.