PDF chapter test TRY NOW

1. What is the importance of rainwater harvesting?
 
a. Rainwater harvesting overcomes the rapid depletion of groundwater levels.
 
b. Rainwater harvesting helps to meet the rising freshwater demand.
  
c. Rainwater harvesting increases the risk of flooding and soil erosion.
 
2. What are the advantages of using biogas?
 
a. Biogas burns without producing smoke, resulting in less pollution.
 
b. Biogas serves as a great technique to dispose off .
  
c. Biogas is safe and convenient to use.
 
d. Biogas  the amount of greenhouse gases emitted.