Energy that is not passed on from one trophic level to the next is
a.
lost as heat
b.
returned to the sun
c.
destroyed
d.
all of the above

A is the answer. hope it helps

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for