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:

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

k2s for potassium sulphide