The sentences below contain one advantage statement and one disadvantage statement. To form a strong basis for debate, both statements must be true and both statements must make valid points. Which statements best debate the advantages and disadvantages of using renewable energy sources, such as hydropower, solar energy, or geothermal resources?

Choose the correct answer.

Solar energy is extremely inexpensive to harvest. Solar energy is available everywhere on the planet.

The use of geothermal energy produces enormous amounts of pollution. The technology required to collect thermal energy is relatively inexpensive.

Geothermal energy is more renewable than solar energy. Hydropower can change flowing water from a renewable energy resource to a nonrenewable resource.

The use of hydropower requires the construction of dams that change the ecology of the river. Hydropower will be available as long as the river continues to flow.