1)this year we'll be planting 1,000 trees as part of our ……. project 2) Fossil ……. , such as petroleum are non-renewable resources because they take a long time to replace

3) Scientists believe the hole in the earth’s ozone ……. is shrinking

need words: warming, fuel, smog, layer, greenhouse, conservation, wast.

ilyavip0412    1   02.09.2021 15:10    1