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.
-simple carbohydrates linked together (sugar molecules)
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B. is the correct answer because not all genes are actively coding,RNA is not code for protein synthesis, also DNA does not contain a number of segments that code for specific proteins.
I can say that climate affects rock weathering by wet weather raining on rocks then water runs into the cracks, then the cold weather freezes the water causing it to expand, this pushes the cracks apart.
Hope this helps!
