Instead, "Effects of Several Environmental Factors on Growth of Populations of Escherichia coli " (if more than two or three factors were manipulated) would be appropriate.
The same applies if more than two or three organisms were studied.
In any of the above cases, the reader would be forced to read more of the paper to understand what the researcher had done.
Exceptions do occur: If several factors were manipulated, all of them do not have to be listed.
Scientific papers must be written clearly and concisely so that readers with backgrounds similar to yours can understand easily what you have done and how you have done it should they want to repeat or extend your work.
When writing papers for the biology department, you can assume that your audience will be readers like yourselves with similar knowledge.All background information gathered from other sources must, of course, be appropriately cited.(Proper citation of references will be described later.)A helpful strategy in this section is to go from the general, theoretical framework to your specific question. Remember that you are writing for classmates who have knowledge similar to yours.Most of the paper should be written in the PAST TENSE (was, were).The present tense (is, are) is used when stating generalizations or conclusions.Exclude detailed descriptions of organisms, materials and methods.Tables or figures, references to tables or figures, or references to literature cited usually are not included in this section. An easy way to write the abstract is to extract the most important points from each section of the paper and then use those points to construct a brief description of your study.Scientific experiments are demanding, exciting endeavors, but, to have an impact, results must be communicated to others.A research paper is a method of communication, an attempt to tell others about some specific data that you have gathered and what you think those data mean in the context of your research.For example, "Effects of Light and Temperature on the Growth of Four Species of Bacteria" would be correct.The researcher would then include the names of the bacteria in the Materials and Methods section of the paper.