Asteroid Theory Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.To popularize the asteroid theory of dinosaur extinction, paleontologists have to provide somewhat stronger evidence than now linking the disappearance of fossil records and the layer of sediment in the Earth's crust caused by an asteroid impact. have to provide somewhat stronger evidence than now linking have to provide somewhat stronger evidence than they do now and link would have to provide somewhat stronger evidence than they do now and link would have to provide somewhat stronger evidence than they do now linking would have to provide somewhat stronger evidence than now linking Review Answer