Which property describes how easily a mineral can be scratched? a. Cleavage
b. Color
c. Hardness
d. Luster

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete