The solstices and equinoxes, and the number of hours of daylight associated with each, are major factors in the seasons. Use the drop-down menus to identify the month when each of these events occurs. The winter solstice in the Northern Hemisphere:
An equinox in both hemispheres:
The summer solstice in the Northern Hemisphere:

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 .

3. dark matter

empty space could also be a simple vacuum