The goal of this primer is to raise awareness, knowledge and understanding amongst 16-19-year-old students of climate-linked changes in nature and biodiversity affecting the plants and animals in our seas, coastlines, lakes and terrestrial habitats. It demonstrates how a substantial array of biological observations, research experiments and models provide confidence in the accuracy and validity of current and future predictions. All levels of biological organisation from individual organisms to ecosystems are being influenced and changes are projected to increase in coming decades. However, much remains to be discovered and this primer highlights potential future roles for 16-19 students -- from volunteers to career researchers - through which they can help in transforming and mitigating future impacts. Digital formats and resources The book is available for students and institutions to purchase in a variety of formats, and is supported by online resources: The e-book offers a mobile-compatible experience and convenient access along with functionality tools, navigation features, and links that offer extra learning support: www.oxfordtextbooks.co.uk/ebooks Online resources, available for registered adopters, include downloadable figures and tables from the book.