Answer:
Butterfly
Explanation:
a heterotroph is an organism that cannot make its own food, and therefore relies on other organisms for sustenance.
potatoes, sunflowers and soybeans are all plants and make their own food through photosynthesis
(they are called autotrophs)
However a butterfly relies on flowering plants to provide the nectar that it consumes.
if all the flowering plants suddenly died the butterflies would most likely die as well because their food source has been eliminated.
therefore the butterfly is a heterotroph
