In which situation is the principle of cross-cutting relationships useful in determining relative age? A fault breaks through sedimentary layers.
Fossils of two different species are found in different rock layers.
Sedimentary layers form over millions of years in a lake bottom.
Lava flows form on top of one another from several eruptions over time.

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 answer is a. i hope this

1-taiga 2-desert 3-desert 4-taiga