Fossils are used to determine a likely pattern of how vertebrates have changed over time. true or false

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim