Which of the following is a primary challenge of using many renewable energy resources?
Most renewable energy resources are found only on a few of Earth's continents. There are currently no cost-effective ways to use renewable energy supplies. They are diffuse and intermittent. There is not enough energy in solar or wind to meet the needs of the global population.
The primary challenge of using many renewable energy resources is that they are diffuse and intermittent. This means that renewable energy sources like solar and wind are not always available at all times and can vary in intensity, making it difficult to rely on them consistently for energy supply.