Milan is measuring the density of ethanol. He weighs a bottle three times: first, empty; then filled with water; then filled with ethanol. Here are his
results:
mass of empty bottle = 30.0g
mass of bottle filled with water = 90.0g
mass of bottle filled with ethanol = = 78.0g
i Calculate the volume of the bottle.

d) the number of neutrons plus the number of protons

your answer would be fusion

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:

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

don't remove my answer im trying my best to answer them

explanation: