Използвани източници

Информация:

Учебник по география и икономика за 8 клас / Просвета

Автори: Стела Дерменджиева, Петя Събева, Емил Гачев, Надежда Николова, Александър Гиков, Петър Стоянов, Цветелина Пейкова

http://www.learndev.org/dl/Crisis21-Avery.pdf

https://epis.bg/za-horata/demografski-problemi-v-savremenniia-sviat/

https://referatite.org/prodovolstven-problem-i-ustoichivo-razvitie/90695/ref/p4 

https://ucha.se/

https://www.kaminata.net/forum/viewtopic.php?t=55531

http://www.helpos.com/archive/preview-web/12_018_12_index.html

https://bg.warbletoncouncil.org/principales-problemas-ambientales-5827

https://bg.thpanorama.com/articles/medio-ambiente/los-10-principales-problemas-ambientales-a-nivel-mundial.html

https://storymaps.arcgis.com/stories/4864e90958394ff7a8a0e539cb780dba?fbclid=IwAR2UDeriCSA3_886EPL8uIJ7GAIdjsz_4CPs3IMF_DaG1t01CGGE9TaFJKc

https://padlet.com/yayotina06/j03daci9lrzzv2o9

https://scratch.mit.edu/projects/598769196?fbclid=IwAR15SFgaMQLYk58wL4n4ScY7tzwqPUMp2hmfyLVJ5SwfrkgukwPuQH2UpO4

Изображения:

https://play.google.com/store/apps/details?id=org.scratch&hl=bg&gl=US

https://www.svobodnaevropa.bg/a/30502778.html

https://saint-gobain.bg/4-novi-nachina-za-reshenie-na-energiyniya-problem.p560

https://bg.erch2014.com/obrazovanie/85134-problema-ekologii-sochinenie-dlya-mladshih-i-starshih-klassov.html

https://bg.wikipedia.org/wiki/

https://money.bg/macro/tri-pati-ura-za-demografskata-kriza.html

https://www.bgfermer.bg/article/6796109

https://bg.puntomarinero.com/global-environmental-problems-something-that/

https://i.framar.bg/

Видео: 

https://www.youtube.com/watch?v=Uo4vZiHXACc&t=3s