1, to determine the starting point of the food chain, usually the producer (such as plants).
2, determine the end of the food chain, usually the highest trophic level (such as top predators).
Draw an intermediate link between the producer and the highest trophic level, which may include all levels of consumers, such as herbivores and carnivores.
4. Connect these links with arrows, pointing to predators.
5. Avoid including decomposers in the food chain, because they are not directly related in the food chain.
6, you can use different graphics software to draw the food chain, for example, in CorelDRAW, you can create a new blank document, use the basic shape tool to draw the process graphics, then use the arrow tool to connect them, and finally enter the text and color.