Answer:
2.They are specialized to do certain tasks
A stem cell is a body cell. Basically any cell that isnt used for reproduction i.e., gametes.
Convection currents, air flows towards the equators
A snow crystal appears when water vapor in the air converts directly into ice without first becoming liquid water. ... The exact shape of the final snow crystal is determined by the precise path it took through the clouds. But the six arms all took the same path, and so each experienced the same changes at the same times.
