Which pair of substances would be easy to separate using distillation? A. Water and alcohol
B. Suger and salt
C. Oil and water
D. Sand and gravel

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 happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.