(reporting links) giving Which of the following are indicators of a healthy water source?

A. high nitrates, high pH, and low temperatures

B. low temperature, high dissolved oxygen, and neutral pH

C. low pH, high nitrates, and low dissolved oxygen

D. high turbidity, high dissolved oxygen, and high temperature

How many neutrons does a atom of cobalt have?

What are the similarities of physical and chemical change ?

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.