1. 8ºC

10. Pollution Air pollution is the introduction of chemicals, particulate matter, or biological materials  Pollution means dirt, degradation, contamination and disease Air pollution has long been recognized as a threat to human health as well as to the Earth's ecosystems. André Manuel Nº4 8ºC Joana Varela Nº16 8ºC

12. Helpus s vetheworld! Recycle for your benefit and for the community and the world. Recycle and contribute to a better world. Do not let your world "die." Protect your space for a better life. Pedro Santos Nº21 8ºC