This resource is great for a an introductory or extension assignment, as well as a sub plan assignment, no outside sources are needed. The worksheet utilizes informative text and illustrations to provide a foundation of knowledge over the following standard: SC.7.L.17.3 - Describe and investigate various limiting factors in the local ecosystem and their impact on native populations, including food, shelter, water, space, disease, parasitism, predation, and nesting sites. A 10 question assessment