Natural sources include decomposition,ocean release and respiration.
Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal,oil and natural gas.
Through absorbing nutrients and matter and the releasing new matter, usually in the form of CO2<span />
Answer:
Commonly from a guys perspective and where you live it can be 50/50. In the city life, your gal or lad will likely leave you for another boy or girl since there are more to choose from or rather date.
Hydrogen is the only element in entire periodic table with only 1 proton in its nucleus.
