After one species disappears, the other species in the ecosystem

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

An infection of the pulp and the surrounding tissue in the mouth is called

The picture below shows two galaxies. spiral galaxy and elliptical galaxy which of these statements best describes a similarity between the two galaxies? (2 points) both have elongated centers. both have centers shaped like bars. both change their shape from time to time. both are held together by gravitational forces.