They always start with an organism that makes food. The producer. In this example, it's grass. The first consumer in the chain, in this case the grasshopper, is also called the primary consumer.

After watching the video, students can construct a food web showing the interactions among the organisms on the island and in the ocean. Identify the producers and consumers in an ecosystem.

More than 70 percent of Americans say they don't want genetically modified organisms in their food, according to a recent Consumer Reports National Research Center survey of 1,000 adults.