4. How can people reduce and control air pollution?
a. Continuously use coal to power factories and plants.
b. Burn dried leaves and twigs to prevent accumulations
.
Use alternative means of transportation like bicycles.
d. Use gas-fueled transportation everyday.
5. Which prevent ill effects of noise pollution?
C.
1. minimizing use of car horns
II. removing silencers in motorcycle mufflers
Ill. turning up the volume of stereos in full blast
IV. using ear mufflers for protection
a. I and III only
b. ll and Ill only
c. I, III, and I only
d. I, II, and IV