The Role of blastula is Blastula is this and that and Yh they should gather everyday to stage the Animals
Answer:
Option 4 depends on the ability to turn towards light.
Explanation:
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.
