A group of individuals of the same type that interbreed and live in different areas is a population agree or disagree and why

Explain how organisms could be harmed by high levels of salt from roadways?

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury