Answer:
A fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion.
Step-by-step explanation:
the fossil fuels are a problem because: Fossil fuels take a toll on the environment. They cause obvious problems such as oil spills and smog filled air. ... Acid rain, for example, caused partially by sulfur in fossil fuels, damages buildings and harms trees, aquatic life, and insects. Pollution mixes with clouds and forms acid rain.