What is the unique thing about stem cells that makes them so desirable

In which direction is the pacific plate moving in relation to the north american plate?

What are the headings of a data table

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.