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).
Length of Article: Journal articles, in general, tend to be fairly lengthy, often consisting of a dozen or more pages. Some journals also publish book reviews. These are typically brief and should not be confused with the full-length research articles that the journal focuses on. Use of volume and issue numbering: Journals normally make use of volume and issue numbering to help identify individual issues in their series. Normally a volume will encompass an entire year's worth of a journal's issues. For example, a journal that is published four times yearly (quarterly) will have four issues in its yearly volume. Issues may be identified solely with numbers or with both numbers and date designations.