What is the speed of a jet plane that travels 1864 meters in 42 seconds

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

Competition occurs between species when

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