Magnesium (2,8,2) and Sulphur (2,8,6)

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

There are main groups in the modern periodic table of elements

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?