Biogas collected from landfill sites consists mainly of A. ethane
B. ethanol
C. methane
D. methanol

· Decide whether each statement is true (T) or false (F). Place your answer in the blank space given.

a. The current obtained from a photoelectric cell is weak.

b. Photovoltaic cells produce no emissions during their operation.

C. The Canadian province that obtains the greatest proportion of its
electricity from hydroelectricity is British Columbia.

d. To supply the hydrogen for transportation in the hydrogen economy
will require vast amounts of electrical energy.