Others require a Master's degree in ecology or environmental science. There are several types of biology careers which involve some type of public education. These include naturalists, zoo curators, and museum curators. Jobs are not abundant in any of these areas. A Bachelor's degree in biology with some geology and history training is the most appropriate preparation.
Biologists working in museums and zoos hold a variety of positions.
Some of the jobs are interpretive and require the same kinds of skills as a park naturalist. Other biologists in these institutions have jobs caring for or adding to the institutions' collections. Most of these professionals have an undergraduate degree in something like biology and a Master's degree in some specialty. The employment outlook for microbiologists appears to be good. In most cases a Master's degree in some area of microbiology is most appropriate.