Natural resources come from ____. The air and sun are natural resources. A renewable ____ is one that can be ____ easily and reused. Renewable resources include ____ energy and energy from the ____, which we call ____ energy. Oil, coal and gas are all forms of ____-renewable resources. We call these fossil fuels. Solar panels on houses or other buildings allow us to absorb ____ from the sun and change it into renewable energy. The benefits of Solar panels: ____, efficient, not costly once installed, and ____ can go to the grid. Disadvantages: difficult to ____, expensive, work poorly in ____, night or cloudy days.

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