1. what causes the moon’s shadow to change placement?

2. what must happen for a solar eclipse to occur?

3. why don’t we see lunar eclipses every month?

The answer is a: the eggs have half as many chromosomes as the body cells

Can you include the paragraph too ?

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.

The correct answer is b