Classify each of the following as a heterogeneous mixture or a homogeneous mixture:
1) salad
2)tap water
3) muddy water

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.

When balancing a chemical equation:

Chromosome 17 is made of over million base pairs.