True or false: during the spring and fall equinoxes, the circle of illumination lights up the earth exactly even, allowing for exactly 12 hours of day and 12 hours of night everywhere on earth.

True

Explanation:

In the spring and fall equinoxes the north and south poles are at the same distance from the Sun. Therefore, the star rises exactly in the east and sets exactly in the west, allowing for exactly 12 hours of day and 12 hours of night everywhere on Earth.

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

it breaks and dirupture other materials and other sencews from the bottom