#10 Sunburns
You go to the beach for a sunbath and end up scaring your skin completely due to immediate sun burns. But wait, will we have water, sand and beach without the oxygen?
#9 Skin diseases
Oxygen in air protects our skin. Without it, we are more prone to the skin diseases. Without Oxygen in the air, UV rays will destroy our skin.
#8 Dark Mornings
Without Oxygen, the mornings will be dark. The daytime sky would get really dark and will give you the feel of night.
#7 Dark sky
Talking about the sky, it won't be blue anymore. Less oxygen means fewer particles to bounce light, that means a very very dark sky.
#6 Metals Would Weld
Lets talk science. Oxidation prevents metal for welding. Without Oxygen, you can imagine the condition of metals now.
#5 Crumbling Crust
45% of earths crust is made up by oxygen. Without oxygen, the crust would crumble. You'll see the cracks.
#4 Exploded Ear
The most dangerous thing that would happen is that everyone's inner ear would explode. Earth would lose about 21% of its ear pressure. This would cause the damage.
#3 Dusty Buildings
Every building in this world would turn to dust. Oxygen plays a very important role in binding concrete. Lack of oxygen means weak binding!!
#2 Oceans
Oceans would evaporate into space. Without Oxygen, Hydrogen will freely float and turn all the liquidy water into gaseous state. How will we live than?
#1 Hydrogen In Abundance
Lack of oxygen might just finish the mankind. Hydrogen is free to float in space. Abundance of hydrogen means Difficult respiration. No oxygen just eliminates the process of breathing. This will kill all of us.
