This approach represents their awareness towards the environment.

I think this another example of the clash of the collocation civilisations!

Indonesians are probably thinking ‘kesadaran terhadap..’, and translating terhadap as towards. I’m afraid that’s not English collocation. Here’s what you need:

• This approach represents their awareness of the environment.

Just in case you don’t believe me, here are the first 20 results from Netspeak.org:

1. their awareness of a number
2. their awareness of and share
3. their awareness of issues with
4. their awareness and understanding of
5. their awareness of the importance
6. their awareness of their own
7. their awareness of the need
8. their awareness and knowledge of
9. their awareness of, and
10. their awareness of the world
11. their awareness and appreciation of
12. their awareness of the issues
13. their awareness of the potential
14. their awareness of the needs
15. their awareness and use of
16. their awareness of how to
17. their awareness of security issues
18. their awareness of the impact
19. their awareness of the benefits
20. their awareness of the problem