These primary producers exist at the lowest levels of the food chain and absorb sunlight or chemical energy, rather than other organic material, as sources of energy.
(These primary producers; exist; L:at the lowest levels of the food chain) (These primary producers; absorb; sunlight or chemical energy; rather than other organic material, as sources of energy)
These primary producers These primary producers
exist absorb
L:at the lowest levels of the food chain
sunlight or chemical energy rather than other organic material, as sources of energy