I agree with Yondela's corrections. The only thing that I would have changed would have been the first line. Her correction reflects more common phrasing while yours is something more literary. For example, one common version of the Golden Rule is "Love your neighbor as yourself," which implies that you love your neighbor as much and the same way as you love yourself. 1. If you want to say that you treat the environment with the same care as you do when looking after yourself, you would say: We should care for the environment as we care for ourselves. 2. If you want to emphasize *who* should care for the environment, you would say: We should care for the environment ourselves. In the first sentence, "as" shows that the environment has the same importance as we do. In the second, the reflexive "ourselves" emphasizes the subject, making it really clear who is doing the action. In this context, either could be correct. It just depends on the message you want to share. Good luck!

Good attempt!