Introduction Biodiversity Introduction These worksheets will introduce pupils to the concept of wildlife conservation. Worksheets Lesson 1 - What is an endangered species? (PDF 213 KB) Lesson 2 - What is an endangered species? (PDF 96 KB) Lesson 2 (Resources) - House Sparrow (PDF 356 KB) Lesson 3 - What is a food chain? (PDF 271 KB) Download All Downloading... Packaging: Complete