Answer: The first one is “Prevailing winds” but the second one i don’t know sorry :/
Explanation:
Cold working. Hope this helps!
Answer - Cyanobacteria aka Algae that contributed in creating O2 for the atmosphere as a byproduct thru Photosynthetic.
Reason - Of course Algae make up mainly the whole world in waters and they do photosynthesis to give off oxygen in the atmosphere.