Use the salamander cards to model how speciation may have occurred from a single ancestral species, as populations spread around California's long Central Valley. Describe your model as a sequence of steps that account for how each species could have become reproductively isolated. help me please ​

Which sentence best expresses the differing opinions of these two book reviews?

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

The normal shape of an enzyme is as shown in structure a. if the enzyme’s shape changes to that shown in structure b, what are two consequences of this change?