(Earth and Space Science) The sun rotates ___.

A. Around earth once per year.
B. Every 31 days.
C. At different speeds along it's sphere.
D. Once per year​

Which of these best describes an ionic bond?

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

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