Which observed feature of the universe, discovered by Edward Hubble, is illustrated in the diagram? A) entropy B) expansion C) radiation D) redshift

Butterfly wingspan is 7.7

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic