Describe the difference between a sidereal day and a solar day.

The sidereal day is based on the successive passes of meridian across the vernal equinox, while solar day is a measure based on the successive passes of the sun. • Solar day is about 4 minutes longer than the sidereal day.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

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: