Which of the following statements is true?
a) earth is the only planet with an atmosphere
b) earth's atmosphere changed to an oxygen-rich one
c) earth's formation was different from other planets
d) earth does not change

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.

There would be one bar shorter than the bar for peaches.

4, two dominant and two recessive