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.

Ithink it is quantity of plants

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.