Final answer:
Pennsylvania's top two non-renewable energy resources are coal and natural gas.
Step-by-step explanation:
Pennsylvania's top two non-renewable energy resources are coal and natural gas. Non-renewable resources are natural resources that exist in fixed amounts and can be used up. Fossil fuels, such as coal and natural gas, are examples of non-renewable resources. They are formed from the remains of plants and animals over millions of years and are consumed much faster than they can be replenished by nature.