If you were a scientist studying the use of and competition for water between two species of nocturnal frogs, you would be a specialist at which level of biology?

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

In response to framton's dialogue about his health issues, mr. sappleton replies: "no? " said mr. sappleton, in a voice which only replaced a yawn at the last moment. then she suddenly brightened into alert not to what framton was saying. what does this statement reveal about how mrs. sappleton feels about framton? a) she finds him boring. b) she's happy he came by. c) she finds him annoying. d) she feels sorry for him

Where does the esophagus lead to in a frog?