This is the 3053rd most frequent Catalan word.
mediambientals
"Environmental."
In this sentence, 'mediambientals' is used as an adjective describing the type of effects being discussed, specific to the environment.
Els efectes mediambientals del canvi climàtic són preocupants.
The environmental effects of climate change are concerning.
Here, 'mediambientals' modifies 'polítiques', indicating these policies are related to environmental protection or consideration.
Cal aprovar polítiques mediambientals que protegeixin el planeta.
Environmental policies that protect the planet need to be approved.
This usage of 'mediambientals' refers to measures or actions specifically focused on environmental matters.