Drawbacks to which energy source include build up of silt or disruption of salmon migration?
Nuclear energy
Geothermal energy
Photovoltaic cells
Hydroelectric power

What do you think was the long term impact of england victory

Which of the following factors is not used to measure a country’s standard of living? a.) life expectancy b.)educational levels c.)divorce rates d.) gross income

What id the primary human cause of the global warming a. storage of nuclear fuel rods b. burning of fossil fuels c. building of high-density housing d. violent conflicts over natural resources