Which statement is true about the current understanding of the composition of the universe. a) roughly 70% of the mass of the universe is normal "everyday" matter. b) all energy in the universe is bound up as everyday "normal" matter. c) roughly 23% of the mass of the universe is normal "everyday" matter d) roughly 5% of the mass of the universe is normal "everyday" matter.

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent