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.

Main benefits: The food must contain no or minimal (less than 0.9 percent) genetically modified (or engineered) organisms ... be genetically modified for consumers who wish to avoid them.

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.

Primary consumers Usually eat plant material - they ... Decomposers Feed on dead and decaying organisms, and on the undigested parts of plant and animal matter in faeces.