Just like a food chain, energy enters the food web at the trophic level of the producers, which can also be called autotrophs. In the desert, autotrophs are often some type of cactus, grass, or shrub.
The main purpose of the INTRODUCTION is to give a description of the problem that will be addressed. In this section the researcher might discuss the nature of the research, the purpose of the research, the significance of the research problem, and the research question(s) to be addressed. Three essential parts of a good introduction are: RATIONALE.
What is the purpose of a descriptive essay? A descriptive essay is written in order to get the reader to understand something through the use of descriptive language. In a narrative essay, the reader is told a story. Through that story, they are able to piece together descriptions of the people, places, items, and events that are discussed. In a descriptive essay, there is no story that is being related to the audience. Though previously discussed the purpose of persuasive essay, students often confuse these two purposes. Here is an example of a car that is being described in a narrative essay: When John hit the gas pedal, the car took off like a rocket.