Which best describes stem cells?
a) differentiation creates specialized cells from stem cells.
b) self-renewal creates stem cells from differentiated cells.
c) self-renewal creates differentiated cells from stem cells.
d) differentiation creates stem cells from specialized cells.

The correct option is A.

STEM cells are those cells which are undifferentiated and they have the capacity to reproduce themselves by means of self renewal; they do this by differentiating into different cell types from which can be formed highly differentiated cells. New scientific knowledge that have been made available through STEM cell biology are now been used in diverse ways including developing treatment for various reproductive diseases.

well schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  not be written on computer in this day and age.

don't delete this trying to

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation: