Me hurry plz 1) list and describe the four levels of organization from the simplest to the most complex and give an example

Cell: Basic unit of structure and function of all living things. Example is an egg cell

Tissue: Group of cells of the same kind. example is epithelial tissue

Organ: Structure composed of one or more types of tissues. example is kidney

Organ system: Group of organs that work together to perform a certain function. example is respiratory system

The offspring will be blood type aa, bb, ab and oo or i

Idont really understand