What was technicalagy like in the past

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

Find the mass, in grams, of 5.00*10^23 molecules of f2