Fact 1: Cells are organized into tissues, and tissues form organs.

Fact 2: Stem cells are cells that can become many tissues and organs.

Given the two facts above, answer the question "What do stem cells form?" with the following options: 
- embryos
 - alveoli
 - Grow well
 - PDAs
 - alleles
 - Organs
 - grow
 - fusion


 

      Organs   