| Pollution /pəˈluːʃn/ | poluição | Air pollution in cities is a serious risk. |
| Carbon footprint /ˈkɑːbən ˈfʊtprɪnt/ | pegada ecológica de carbono | Cycling reduces your carbon footprint. |
| Habitat /ˈhæbɪtæt/ | hábitat natural | Deforestation destroys animal habitats. |
| Endangered species /ɪnˈdeɪndʒəd ˈspiːʃiːz/ | espécies em vias de extinção | Tigers are an endangered species. |
| Renewable energy /rɪˈnjuːəbl ˈenədʒi/ | energia renovável | Solar panels produce renewable energy. |
| Deforestation /ˌdiːˌfɒrɪˈsteɪʃn/ | desflorestação / desmatamento | Deforestation threatens tropical forests. |
| Eco-friendly /ˈiːkəʊ ˈfrendli/ | ecológico / amigo do ambiente | This packaging is completely eco-friendly. |
| Conservation /ˌkɒnsəˈveɪʃn/ | conservação da natureza | The park is focused on wildlife conservation. |
| Biodiversity /ˌbaɪəʊdaɪˈvɜːsəti/ | biodiversidade | Loss of rainforests reduces biodiversity. |
| Drought /draʊt/ | seca (falta prolongada de chuva) | The region suffered a severe drought. |
| Emissions /ɪˈmɪʃnz/ | emissões de gases | Factories must reduce toxic emissions. |