000007
000007
7 x 10-6
It is: 7.0*10^-6
No, if there is a negative number then you put that many numbers before the root number. For example, 7x10^-5= .000007
The human respiratory system is adapted to breath the air on Earth, which is: Nitrogen (N2): 78.084% Oxygen (O2): 20.946% Argon (Ar): .9340% Water vapor (H2O): .4% Carbon Dioxide (CO2): .039445% Neon (Ne): .001818% Helium (He): .000524% Methane (CH4): .000179% Krypton (Kr): .000114% Hydrogen (H2): .000055% Nitrous oxide (N2O): .00003% Carbon monoxide (CO): .00001% Xenon (Xe): .000009% Ozone (O3): .000007% Nitrogen dioxide (NO2): .000002% Iodine (I2): .000001% Ammonia (NH3): minimal traces Humans are not known to be able to breathe any drastically different type of air.