Antibiotics and antibacterial products have saved a countless number of lives. With all the good that antibiotics have brought to the world, an unforeseen problem has surfaced. As more antiobiotics are used, bacteria are adapting to the selective pressures imposed on them by humans. Natural selection has acted on bacteria, creating new strains (genetic variants of a species) of bacteria with mutations coding for antibiotic resistance.

The new strains produced from the subtle mutations in bacterial DNA over a short period of time can best be described as which type of evolution?

A. microevolution

B. macroevolution

C. artificial evolution

D. punctuated equillibrium

In shakespeare’s hamlet what word can be substituted for allusion in the phrase the illusion is that not only does larry us die as expected but hamlet is doomed to die by the poison on his own sword as

How might an author with the opposite attitude rephrase the following sentence? this historic building is a local treasure, with a distinctive exterior and many antiques and fascinating artwork on the inside. choose the correct answer from the following choices, and then select the submit answer button. it's a shame this old building hasn't been torn down yet: its ugly design makes it an eyesore, and it is full of rickety furniture and dusty paintings. this building was built over 100 years ago and features a design not seen on many other buildings of the era as well as a large collection of furniture and art. the old man running the antiques shop watched the kids with suspicion, worrying they would not handle his fragile merchandise with proper care. it is vital that we preserve the history of our town by taking care of buildings like this one, with its interesting design and outstanding collection of art and furniture.

Jane addams's memoir, twenty years at hull-house, describes her work with