Which marine ecosystem contains the fewest producers?
a. intertidal zone
b. near shore zone
c. coral reef
d. open ocean

The answer is D) Open Ocean, This is because it doesn't contain the environmental needs for the producers.

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.