Explanation:
1.Pick up litter and throw it away in a garbage can.
2.Blow or sweep fertilizer back onto the grass if it gets onto paved areas. ...
3.Mulch or compost grass or yard waste. ...
4.Wash your car or outdoor equipment where it can flow to a gravel or grassed area instead of a street.
5.Don't pour your motor oil down the storm drain.
A surface wave is a wave in which particles of the medium undergo a circular motion.
Definitely not the last 2. My bet is on the first option. If it is wrong don't hit me please...