A cactus is an autotroph because it creates its own food (using energy from the sun).
heterotroph
A cactus is an autotroph. This is because autotrophs make their own food using photosynthesis. A cactus uses photosynthesis to make its own food.
heterotroph
Heterotroph
Heterotroph.
heterotroph.
Heterotroph
Heterotroph.
heterotroph
heterotroph
Autotroph
autotroph