Direction: Read the following passage carefully and answer the given questions.

Renewable energy resources are being used all over the world. Brilliant minds have devoted their lives to finding resources that do not leak greenhouse gases into the ozone layer and which do not cost large amount of money. They include energy like Hydro energy, solar energy, wind energy, geothermal energy and ocean resources, and energy generated from biomass and biofuels which are viable alternative sources of energy. They are clean sources of energy and have lower carbon emissions compared to conventional sources of energy such as fossil fuels. What's more, the energy generated is nearly 80% renewable.
Harnessing the power of moving water to generate electricity, known as hydroelectric power, is the largest source of emission-free, renewable electricity worldwide and has been used over the ages. Solar power is another excellent energy resource. The sun gives us free rays, so why not use them as a power source? Solar power is trapped by special rows of panels which take in the energy of the sun and provide power for homes. In places which are windy, powerful wind turbines have been constructed to provide energy. The turbines are big towers with three prongs which are pushed around by the wind. This produces energy. The largest 'wind farm' in the world is in Denmark.