Which lists three units of an organ system in order from the simplest to the most complex? red blood cell → heart → tissue skeleton → bone → bone cell muscle cell → muscle tissue → stomach lung tissue → lung → circulatory system

The correct answer is muscle cell → muscle tissue → stomach

The organization of human body starts from the simplest level and ends at the complex level.

It starts from cell→ tissues→organ →organ system→body. The cell is known as the basic structural and functional unit of life.

Then the cells combine to form tissue and the tissues combinely form organ system.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.

it should be briana that has it to me