Homework dont need to answer fast or give explanation. periodic table: what has mass number 31 other than phosphorus?

The grooves or folds of the brain are called

How far is the region from the equator or control climate

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.