The element P has an atomic number of 15 and an atomic mass of 31. Which statement has the correct number of protons, electrons, and neutrons?

Identify and describe the three ways that mutations affect organisms.

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?