A. 11.) Which is not a characteristic of stem cells?
Can develop into all cell types after they become specialized
b. Divide and renew for long periods of time
c. Remain undifferentiated in form for long periods of time
d. Can develop into specialized cell types

tissue

explanation:

it is actually formed by geoup of cells which is tissue

i think the answer is a.keratin is the pigment responsible for skin color.

the  different  of  these  two  are  that  they  differently  handle  their  team.

an  expressive  leader  focuses  on  the  task  at  hand  and  make  sures  that  their  goal  is  achieved.  they  accurately  finish  the  task.  an  instrumental  leader  on  the  other  hand  works  on  the  unity  of  the  group,  they  care  more  about  their  employees.  all  the  while  creating  a  good  environment.