Cyanobacteria were very simple organisms and performed were an role in changing Earth's early atmosphere. They carried out photosynthesis to produce the materials they needed to grow. In this process, they release Oxygen which is needed to sustain life on Earth for Humans and other organisms.
True. Think if ice cubes in the freezer. They shrink due to sublimation. <span />
Dark reactions<span> make use of these organic energy molecules (ATP and NADPH).</span>
I would say c is the answer