Which is not a factor used to divide the ocean into distinct marine life zones?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Amoeba sisters video recap pedigrees

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.