Question

choose the correct answer. part of the pathway of energy through ecosystems is as follows light → chemical → mechanical. what is the last pathway for energy? heat air water

Explanation:

In ecosystems, energy transformation follows a specific pattern. Light energy is converted to chemical energy (e.g., in photosynthesis). Chemical energy is then used for mechanical work (e.g., muscle movement). According to the laws of thermodynamics, energy is lost as heat at each transfer step. Air and water are not forms of energy in this context.

Answer:

heat