Sam is writing a research paper about how solar power is an environmentally friendly source of energy.
Which research question would help Sam find the most relevant information for her paper?
A.
Which energy sources are environmentally friendly?
B.
Which energy source creates the most pollution?
C.
How does solar power help reduce air pollution?
D.
How can one use solar power to create electricity?
1 answer
C. How does solar power help reduce air pollution?
1 answer