Select all that apply. marie and pierre curie's discoveries included: x-rays uranium radium pitchblende polonium

Marie and Pierre Curie's discoveries included: Polonium and Radium. Marie Curie's death involved her long-term exposure to radiation. I hope this answer helps you on your assignment.

Answer;Radium PoloniumExplanation;Pierre and Marie are known for their work in the study of radioactivity that led to the discoveries of new radioactive elements radium and polonium.Radium element was named after the Latin word ray and Polonium was named after Marie's home country, Poland. Element radium was discovered in the form of radium chloride, that was extracted from uraninite.

The answer is d.potassium