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.
I'm not sure, but it could possibly be diabetes
Hey there,
Your answer is:
<span>Hydrogen turns into helium.
</span>
Hope this helps...Good Luck
Answer:
Life Processing I Learnes this last year in 7 grades
To find out if it's true or not