Scientists and astronomers have found that in galaxies with central black holes, there are also large star formations near those black holes. What has this led researches to conclude?
that star formations create black holes
that black holes and star formations are unrelated
that black holes and star formation are related
that black holes create star formations

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. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j