According to Simpson, protists can be photosynthetic or heterotrophs (organisms that seek outside sources of food in the form of organic material). In turn, heterotrophic protists fall into two categories: phagotrophs and osmotrophs.
Questions asked by the same visitor. The most widely used index for magazine articles is the. Weegy: The Article Index User: The most widely used index for magazine articles is the Periodical Reference GuideReaders' Guide to MagazinesReaders' Guide to Periodical Literature. Weegy: Answer is Readers' Guide to Periodical Literature (More).
When conducting research it is important to distinguish between journal articles and magazine articles. Journal articles are typically referred to as scholarly, while magazine articles are usually considered popular. A third category, trade magazines or journals, are written for professionals in a particular field but are not strictly research related. Below are additional criteria to consider when differentiating between journals and magazines.