Archaeopteryx and the vulture below show a connection for what ? A. The extinction event of dinosaurs
B. The homologous structures which suggests a group of dinosaurs evolved the ability to fly and eventually evolved into modern day birds
C. the analogous structures of animals that have different origins but the same usage
D. the competition that existed between birds and reptiles during the permian

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )