地球 ちきゅう環境 かんきょう保全 ほぜんじゃなかったです
chikyūkankyōhozenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 地球環境保全

1. Wasn't preserving the global environment.; Didn't work on global environmental preservation.

Past/Perfective
Negative
Polite
Casual Register