Yes sweet potatoes contain sugar
Yes, sweet potatoes contain phosphorus.
Nitrogen doesn't contain air, but the air contains Nitrogen.
Yes, soil does contain nitrogen.
No, snow does not contain nitrogen. Snow is made up of frozen water vapor and does not typically contain nitrogen.
Yes, potatoes do contain about 1% calcium.
Yes. All living things contain nitrogen.
Nitrogen is an element that is present in proteins but not in carbohydrates. This is because proteins are made up of amino acids, which contain nitrogen atoms in their chemical structure.
Protiens contain nitrogen
No. Carbon and nitrogen are both elements. They contain only themselves.
There are many compounds that don't contain nitrogen: CO2, NaCl, H2O, C6H6, CuCl2...
Amines contain nitrogen.