This worksheet covers the food chain and food web topics, using an example from marine biology. It also uses vocabulary for trophic levels (producer, primary consumer, secondary consumer, and tertiary consumer), along with terms for specific diet (herbivore/carnivore/omnivore). Ideally these should be taught beforehand, although motivated students will be able to complete the worksheet without having done so, if they are allowed to look up the terms.The instructional level is about grade 9 but I