The "clusters" of Democritus are like what kind of material
that we know of today?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

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

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?