Tritium (hydrogen-3) undergoes radioactive decay to produce helium-3. Which particle needs to be added to this equation to show that the total numbers of
neutrons and protons are not changed by the reaction?
H He + ?
O A. He
O B. He
O c., e
O D.,

With i really need the correct answer!

Which branches of natural science include the study of an organism that lived 10 million years ago

Friction removes energy from objects in motion. which statement best describes how this works? a) friction transforms ke into thermal energy b) friction transfers thermal energy to ke c) friction transforms te into pe d) friction transforms pe into ke e) friction transfers ke into pe