https://science.nasa.gov/kids/earth/mission-biomes/

https://open.lib.umn.edu/environmentalbiology/ 

https://openstax.org/books/biology-2e/pages/44-introduction 

https://education.nationalgeographic.org/resource/resource-library-biomes/ 

https://ucmp.berkeley.edu/exhibits/biomes/index.php 

https://science.nasa.gov/kids/earth/mission-biomes/graphmatch_advanced/ 

https://www.pbs.org/articles/the-effect-of-climate-change-on-different-biomes-and-plants 

Search EBSCO research starter [your biome] to find great overviews

National Geographic has good information on different biomes and ecosysmes

Boreal

https://www.ebsco.com/research-starters/earth-and-atmospheric-sciences/boreal-forests-and-taiga/ 

Intertidal Zone

https://education.nationalgeographic.org/resource/intertidal-zone/ 

https://sk.sagepub.com/ency/edvol/multimedia-atlas-of-global-warming-and-climatology/chpt/whittaker-biome-model