Ответ:
We have problems: 1) there are little forests; 2)there are a lot of garbage in nature; 3) there are many;
animals in the red book; 4) we have a bad air.
I have a suggestion: we can plant a lot of trees. But we must wait for them. Then when they grew up, the air will be a little more fresh✓, there will be more animals✓, BUT we can't make people to stop littering a nature×
Ok, then the second suggestion:
We can make a law about littering. It will be very good. And the penalty will be 100$. Or if we need the most effective way we can do it 500$. The nature will be clean and animals arrive more quickly!
The third way:
We must think about water too…ᘛ⁐̤ᕐᐷ
I can advise only one thing: make a law. That's all.
Our nature is good: trees, animals, water and no garbage! Congratulations, we have a good ideas! (ﾉ◕ヮ◕)ﾉ*.✧