The model shows part of how carbon is cycled between living organisms.
image b43ccec60a054a2dbf9c8b5eba8bc2a8
The (bottom) green box in the model represents organisms that remove carbon dioxide from the atmosphere to recycle it. Which BEST describes these organisms?
a
consumers that make energy by taking in carbon dioxide when they inhale
b
producers that carry out photosynthesis to make carbon-rich sugars
c
fungi that break down oxygen and release carbon dioxide in exchange
d
bacteria that combine carbon dioxide with nitrogen to make nutrients
b
producers that carry out photosynthesis to make carbon-rich sugars