Very good question. their is many ways to protect our environment like
1. Reduce sulfur content in gasoline from its current average of 330 ppm to 30 ppm – Sulfur clogs catalytic converters
2. Require federal emission standards for all passenger vehicles – Including SUVs, trucks and minivans
3. Require emission testing for all vehicles – Including diesel

Thank you for the question.
I am waiting to see answer from all of you

We have to be conscious.
public awareness can make it safe.
With good habits we can protect.
We need to know the value of nature.

Waste management. With the introduction of waste sorting, disposal and recovery systems.
Water pollution control. With separate sewer systems and appropriate treatments. ...
Air pollution control. With the development of aqueous formulas to reduce emissions.