Skin stem cells can only produce other skin cells what does this indicate about skin stem cells

What factors might affect the rate of weathering of a tombstone

Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?