Choose each statement that is scientific. The universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago.
The opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on Earth.
Human life is more valuable than other forms of life on Earth because humans are more intelligent than other organisms.
Ocean tides are caused by the uneven gravitational pulls of the Moon and Sun on different parts of Earth.

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 is the molar mass of potassium nitrate, kno3

Why is retrograde motion an apparent motion