How do you write this dichotomous key?

Statement 1a: Needle leaves, Pine(Name)

Statement 1b: Non-needle leaves, 2(Number)

Statement 2a: smooth edge, Magnolia(Name)

Statement 2b: jagged edge, Elm(Name)

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.

the framers of the constitution insisted that federal judges be nominated instead of elected due to their desire to have judges above the shifting whims of the masses.

the hope, whether achieved or not, was that federal judges would only be beholden to the law and that by not having judges be elected, they would be protected if that law dictated an outcome that ran counter to popular opinion.