The cause of the phases of the moon is a cycle that is close to
long.

tethys sea was an ocean during the mesozoic era .

this ocean was found between gondwana and laurasia.

the name of the ocean came from tethys the titan goddess of the primal font of fresh water which nourishes the earth.

the ocean was also know as neotethys.

the correct answer is - they each vary in size and temperature.

the layers of the earth are not monotone, they are all different, have different sizes and properties.

the four layers are the outer crust, the mantle, the outer core, and the inner core.

the outer crust is solid. it is the top layer, the one we live on, and it is also the smallest and coldest one.

the mantle is lying right bellow the outer crust. it is much bigger, and much hotter, and it is also the layer that influences heavily the upper crust layer with its convection currents.

the outer core is liquid, very hot, relatively big, and it is the third layer (top to bottom).

the inner core is the hottest layers, it is occupying the central part of the planet, and it is the basis on top of all other layers lie on.