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).
Advertising in magazines is useful when trying to reach a special segment of the population -- those engaged in a certain kind of trade, for example, or with interest in particular topics like the outdoors. As in newspapers, companies use both ads and articles are used in magazine advertisements.