What would happen if the urinary system organs stopped working properly

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

What does the law of increasing costs say? a. as you make more and more of one good or service, you will also make more and more of another. b. as you make less and less of one good or service, you will also make less and less another. c. as you make more and more of one good or service, you will make less and less of another. d. there is no change in production levels when you shift from one good or service to another

X-rays are used instead of visible light because x-rays have shorter than visible light, allowing them to produce images of much greater detail. a) energies b) frequencies c) speeds d) wavelengths