Prepositions

Hello!
Is the choice of marked words correct in the first example?

Requirements of the existing legal framework on/about/concerning the protection of flora and fauna.

Under the conditions of stable operation as well as extreme conditions.
We work in stable conditons as well as ( in) extreme conditons. I think the sentence is wrong.
We work in stable as well as (in) extreme conditons.

General data on/about environmental protection.

The previous data as well as data on/about the conditons of...
Thank you