This chart shows a portion of a dichotomous key. which relationship can be determined from this dichotomous key? a) organism x and organism z have at least one observable trait in common. b) organism y has at least one observable trait in common with organisms x or z. c) organism x is in a different phylum than organism y. d) organism z is genetically closer to organism x than to organism y.

B) Organism Y has at least one observable trait in common with organisms X or Z.

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.

Idont know but good luck; )