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 an Essay? I have to write an essay for school about medieval and modern law and order in 350 words, and I need to know how I'm to write the essay. Are essays written to persuade or to inform or to do what? Pretty easy question.