Organisms in an ecosystem occupy trophic levels
defined by energy use.
from the sun
flows into an ecosystem and is transformed into other forms through organisms.
occupy trophic level 1: they
capture sunlight and transform it into chemical energy by photosynthesis.
The transformed energy is then available for consumers at higher trophic levels:
primary consumer, secondary consumer, etc.
Most energy is lost at each trophic level;
only about 10% is available to the next level on the trophic pyramid.
After organisms die, the remaining energy is available to decomposers, which recycle nutrients in the