Oil shale • English Conversation Questions

What is oil shale, and how is it different from conventional oil?
What are the main countries with significant oil shale reserves?
What are the extraction methods used for oil shale?
What are the environmental challenges associated with oil shale extraction?
How does the cost of extracting oil shale compare to conventional oil extraction?
What are the potential economic benefits of developing oil shale resources?
What role does oil shale play in the overall global energy mix?
Are there any technological advancements or innovations in oil shale extraction?
What are the long-term prospects and challenges for oil shale development?
How does oil shale contribute to energy security for countries?
What are the environmental impacts of burning oil shale for energy?