Each population of squirrels evolved different adaptions for each side of the canyon and eventually became genetically different populations. this is an example of which stage of speciation?

Apair of fruit flies reproduces and has 1,000 offspring. all 1,000 of the offspring have the alleles gg. what is the most likely combination of alleles for each parent

Earth is tilted on its axis. which of these would not exist if earth had no tilt?

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?