Final answer:
Earth's magnetic poles are not studied in biology; this belongs to geophysics. Biology, instead, covers life sciences such as zoology, botany, and ecology. Areas such as materials science and chemistry fall outside the realm of biology.
Step-by-step explanation:
The topic that would not be studied in biology is Earth’s magnetic poles. Biology is a diverse field that encompasses various sub-disciplines such as zoology, botany, ecology, and paleontology. Two topics that are likely to be studied by biologists include the life span of tree frogs and how plants reproduce. On the other hand, the study of the Earth's magnetic poles falls under the realm of geophysics, which is a sub-discipline of physics rather than biology. Another area of scientific study that would not be considered part of biology is the examination of the properties of metals which would be categorized under materials science or chemistry. Meanwhile, topics such as the extinction of various species and biogeography, are important areas of study within biology.