Use an example to describe the relationship among cells, tissues, organs, and organ systems

Cells form tissues, tissues form organs, organs form organ systems, organ systems form organisms. Specialized cells in the human body work together to form cell tissues. These tissues form together to make organs. Multiple organs combined form an organ system. Without a working organ system, the human body would be flawed and would not function properly.

1.fossils 2.analogous organs 3.homologous organs