I WILL MARK BRAINEST SCIENCE
What is the relationship between a need
in society and a system?

What is the temperature of one mole of helium gas at stp?

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.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?