Ecosystems are constantly (changing, remain the same) in the (same, different) ways over time.

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Aroller coaster is traveling at 13 mi./s when you purchase a hill that is 400 m long and down the hill exonerate at 4.0 m/s squared what is the final velocity of the posterior found your answer to the nearest number

8. what happens to matter during a chemical reaction