Exhaust from motor vehicles is the number one cause of what? carbon monoxide pollution
acid rain
mercury poisoning
sulfur dioxide pollution

What type of genetic drift would be simulated if all the beans that were not selected died out?

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?