In an ecosystem, phytoplankton are in an ecosystem, phytoplankton are producers secondary consumers detritivores tertiary consumers primary consumers

Answer;

producers

In an ecosystem, phytoplankton are producers.

Explanation;Phytoplankton are the primary producers of their ecosystem, since they are the first organisms to produce energy, which they create from light sources, such as the Sun.They convert acquired light energy into carbohydrates through the process of photosynthesis. Energy not used by the phytoplankton for maintenance is available as food for the animals that consume it.

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.