Why factory waste should be neutralized before disposing it into the water bodies?

Which of these conditions most likely produces an unstable isotope?

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

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5