Final answer:
Nuclear power is a significant source of energy globally, and the United States currently relies on it for about 20% of its electricity production. However, the reliance on nuclear power varies between countries.
Step-by-step explanation:
Nuclear power is a significant source of energy globally and has been used to generate electricity in many countries, including the United States. In the USA, nuclear power plants currently produce about 20% of the country's electricity. However, the reliance on nuclear power varies from country to country, with France relying on nuclear power for about 70% of its electricity.