Stem cells are a class of undifferentiated cells that are able to differentiate into special cell types.
They are important because they represent an area in medicine, because they have the potential to regenerate and repair damaged tissue.
Not all stem cells come from embryos but also bone marrow, your teeth and other places.
Mayan stoneworkers would decorate their building as a show of rank. It would show the other Mayans that they were important and demand respect.
Answer: African-Americans we’re still treated as if they were still slaves in the American Revolution. For instance, they were placed in the front lines during battle, where there were higher chances of getting killed.
Answer:
I have decided to escape to the North because the states up North are free states, meaning that slavery is illegal there. I hope to settle down there, have some breathing room from the South.
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