meaning of pro-environment

English as a Second Language English Vocabulary, Grammar and Idioms
1

Which are correct:

[color=blue]1-They claim to be pro-environment.
[color=red]2-They claim to be pro-environmental.

[color=darkblue]3-They are carrying out pro-environment activities.
[color=darkred]4-They are carrying out pro-environmental activities.

2

Hi Navi

I’d choose 1 and 3.
.