What instrument became such a symbol of resistance to British rule
that it was incorporated into the Indian National Congress flag?
O A hand drawing of Gandhi.
O The spinning wheel.
O Piles of salt
O
A clay pot.

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:

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.