And are early tetrapods that do not have features
unique to fish. Describe how these two species differ anatomically and what that means about
where they each lived.

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food