Final answer:
Coal, natural gas, and petroleum are fossil fuels that pose risks to the environment due to their negative impact during extraction processes and greenhouse gas emissions when burned.
Step-by-step explanation:
The fossil fuels that pose risks to the environment include coal, natural gas, and petroleum. These fuels, when burned, release pollutants and greenhouse gases into the atmosphere, contributing to climate change.
They also have negative environmental impacts during extraction processes, such as oil spills, contamination of water sources, and destruction of habitats.